clouds-mres-b3f5.sfkeijerfeb.workers.dev

Summary

This website contacted 1 IPs in 1 countries across 1 domains to perform 5 HTTP transactions. The main IP is 104.21.8.203, located in and belongs to CLOUDFLARENET, US. The main domain is clouds-mres-b3f5.sfkeijerfeb.workers.dev.
TLS certificate: Issued by GTS CA 1P5 on December 16th 2023. Valid for: 3 months.

This is the only time clouds-mres-b3f5.sfkeijerfeb.workers.dev was scanned on urlscan.io!

urlscan.io Verdict: Potentially Malicious

Targeting these brands: Generic Cloudflare (Online)

Domain & IP information

	IP Address		AS Autonomous System
1 6	104.21.8.203 104.21.8.203		13335 (CLOUDFLAR...) (CLOUDFLARENET)
5	1

6 104.21.8.203 (None, ) 1 redirects

ASN13335 (CLOUDFLARENET, US)

clouds-mres-b3f5.sfkeijerfeb.workers.dev	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
6	workers.dev 1 redirects clouds-mres-b3f5.sfkeijerfeb.workers.dev	17 KB
5	1

	Domain	Requested by
6	clouds-mres-b3f5.sfkeijerfeb.workers.dev	1 redirects clouds-mres-b3f5.sfkeijerfeb.workers.dev
5	1

This site contains links to these domains. Also see Links.

Domain
www.cloudflare.com

Subject Issuer	Validity	Valid
sfkeijerfeb.workers.dev GTS CA 1P5	`2023-12-16` - `2024-03-15`	3 months	crt.sh

This page contains 1 frames:

Primary Page: https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423
Frame ID: 5BA08ACCDFE69B3C28B7D81A44964FCC
Requests: 5 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

Worker threw exception | clouds-mres-b3f5.sfkeijerfeb.workers.dev | Cloudflare

Page URL History Show full URLs

https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423 Page URL
https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/phish-bypass?atok=kA9WqJOClOBUoBzebpNCSwv.4KVVP.fnP6SVVwPviDI-170763... HTTP 301
https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423 Page URL

Page Statistics

5
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

1
Subdomains

1
IPs

1
Countries

17 kB
Transfer

56 kB
Size

1
Cookies

3 Outgoing links

These are links going to different origins than the main page.

URL: https://www.cloudflare.com/5xx-error-landing/
Title: Cloudflare

Search URL Search Domain Scan URL

URL: https://www.cloudflare.com/login?utm_source=error_100x
Title: login to Cloudflare

Search URL Search Domain Scan URL

URL: https://www.cloudflare.com/5xx-error-landing
Title: Cloudflare

Search URL Search Domain Scan URL

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423 Page URL
https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/phish-bypass?atok=kA9WqJOClOBUoBzebpNCSwv.4KVVP.fnP6SVVwPviDI-1707632281-0-%2F433667c0-4e03-451a-bd96-2dc00a6d5423 HTTP 301
https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423 Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

5 HTTP transactions
0 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2 200 433667c0-4e03-451a-bd96-2dc00a6d5423 Show response
clouds-mres-b3f5.sfkeijerfeb.workers.dev/ 4 KB
2 KB 403ms
28ms Document
text/html 104.21.8.203
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

104.21.8.203 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

c94f098b8ce2b4f6082bd7e2e4befc76618881d5ef96876c8506562ff5d29ada

Security Headers

Name	Value
X-Frame-Options	SAMEORIGIN

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36
accept-language: de-DE,de;q=0.9

Response headers

cf-ray: 853a78ddeb334d52-FRA
content-encoding: gzip
content-type: text/html; charset=UTF-8
date: Sun, 11 Feb 2024 06:18:01 GMT
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=JVhYSK1L1bn6X%2Bmg33ThwearbPaVBVQum9a8GN%2FPNNA6OkNa7EQ%2BzDhQRuzchVJQtbYQN3HV3lYHXcz7iaIFPq0AlwhMnfYmGRsiL5bhRxI1QdlKNAvva5kzTWyjdD%2F%2FqO5eekIAphfGcUNmQvvDQXWED5uasEbKH3SO"}],"group":"cf-nel","max_age":604800}
server: cloudflare
vary: Accept-Encoding
x-frame-options: SAMEORIGIN

GET
H2 200 cf.errors.css
clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/styles/ 24 KB
5 KB 21ms
21ms Stylesheet
text/css 104.21.8.203
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/styles/cf.errors.css

Requested by

Host: clouds-mres-b3f5.sfkeijerfeb.workers.dev
URL: https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

104.21.8.203 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

1103290e25ebda2712abe344a87facbac00ddaba712729be9fe5feef807bf91b

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date: Sun, 11 Feb 2024 06:18:01 GMT
content-encoding: gzip
x-content-type-options: nosniff
last-modified: Fri, 02 Feb 2024 15:36:02 GMT
server: cloudflare
etag: W/"65bd0be2-5e44"
x-frame-options: DENY
vary: Accept-Encoding
content-type: text/css
cache-control: max-age=7200, public
cf-ray: 853a78de1b724d52-FRA
expires: Sun, 11 Feb 2024 08:18:01 GMT

GET
H2 200 icon-exclamation.png
clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/images/ 452 B
540 B 20ms
20ms Image
image/png 104.21.8.203
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/images/icon-exclamation.png?1376755637

Requested by

Host: clouds-mres-b3f5.sfkeijerfeb.workers.dev
URL: https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/styles/cf.errors.css

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

104.21.8.203 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

f1591a5221136c49438642155691ae6c68e25b7241f3d7ebe975b09a77662016

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/styles/cf.errors.css
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date: Sun, 11 Feb 2024 06:18:01 GMT
x-content-type-options: nosniff
last-modified: Fri, 02 Feb 2024 15:36:02 GMT
server: cloudflare
etag: "65bd0be2-1c4"
x-frame-options: DENY
vary: Accept-Encoding
content-type: image/png
cache-control: max-age=7200, public
accept-ranges: bytes
cf-ray: 853a78de3b8f4d52-FRA
content-length: 452
expires: Sun, 11 Feb 2024 08:18:01 GMT

GET
H2

500

Primary Request 433667c0-4e03-451a-bd96-2dc00a6d5423 Show response
clouds-mres-b3f5.sfkeijerfeb.workers.dev/
Redirect Chain

https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/phish-bypass?atok=kA9WqJOClOBUoBzebpNCSwv.4KVVP.fnP6SVVwPviDI-1707632281-0-%2F433667c0-4e03-451a-bd96-2dc00a6d5423
https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423

4 KB
5 KB

38ms
38ms

Document
text/html

104.21.8.203
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

104.21.8.203 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

fe36edb08f118bfab9dbbc981fe1f965a81546804acce7a5831f60e59831b074

Security Headers

Name	Value
X-Frame-Options	SAMEORIGIN

Request headers

Referer: https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36
accept-language: de-DE,de;q=0.9

Response headers

alt-svc: h3=":443"; ma=86400
cache-control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
cf-ray: 853a78f62dc44d52-FRA
content-length: 4373
content-type: text/html; charset=UTF-8
date: Sun, 11 Feb 2024 06:18:05 GMT
expires: Thu, 01 Jan 1970 00:00:01 GMT
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy: same-origin
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=H1jY3j90%2BCMa4O57PyzGDTdOiwM6cOv3eUYgIlUI33KYTF1s5ZI%2F%2B5q%2BOhQOkkLSKKOAaKNDGpUN5fruc0s1f7nkpFVOD%2BLXWQr5IQwGsN2IJlIa9JwdRGjFpUI2oev8uFnb31QOLnAnSbg3lvY7tGKdse8UeQv8xIZw"}],"group":"cf-nel","max_age":604800}
server: cloudflare
vary: Accept-Encoding
x-frame-options: SAMEORIGIN

Redirect headers

cache-control: private, no-cache
cf-ray: 853a78f58cc44d52-FRA
content-length: 167
content-type: text/html
date: Sun, 11 Feb 2024 06:18:05 GMT
location: https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423
server: cloudflare
x-content-type-options: nosniff
x-frame-options: DENY

GET
H2 200 cf.errors.css
clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/styles/ 24 KB
5 KB 22ms
22ms Stylesheet
text/css 104.21.8.203
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/cdn-cgi/styles/cf.errors.css

Requested by

Host: clouds-mres-b3f5.sfkeijerfeb.workers.dev
URL: https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

104.21.8.203 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

1103290e25ebda2712abe344a87facbac00ddaba712729be9fe5feef807bf91b

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date: Sun, 11 Feb 2024 06:18:05 GMT
content-encoding: gzip
x-content-type-options: nosniff
last-modified: Fri, 02 Feb 2024 15:36:02 GMT
server: cloudflare
etag: W/"65bd0be2-5e44"
x-frame-options: DENY
vary: Accept-Encoding
content-type: text/css
cache-control: max-age=7200, public
cf-ray: 853a78f66e394d52-FRA
expires: Sun, 11 Feb 2024 08:18:05 GMT

Verdicts & Comments Add Verdict or Comment

Potentially malicious activity detected
Disclaimer: These verdicts should be used to detect potentially malicious websites, not as a final verdict!

urlscan

Phishing against: Generic Cloudflare (Online)

1 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

object| _cf_translation

1 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

			Domain/Path	Expires	Name / Value
			.clouds-mres-b3f5.sfkeijerfeb.workers.dev/	1970-01-20 18:21:58	Name: __cf_mw_byp Value: kA9WqJOClOBUoBzebpNCSwv.4KVVP.fnP6SVVwPviDI-1707632281-0-/433667c0-4e03-451a-bd96-2dc00a6d5423

1 Console Messages

A page may trigger messages to the console to be logged. These are often error messages about being unable to load a resource or execute a piece of JavaScript. Sometimes they also provide insight into the technology behind a website.

Source	Level	URL Text
network	error	URL: https://clouds-mres-b3f5.sfkeijerfeb.workers.dev/433667c0-4e03-451a-bd96-2dc00a6d5423 Message: Failed to load resource: the server responded with a status of 500 ()

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header	Value
X-Frame-Options	SAMEORIGIN

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

clouds-mres-b3f5.sfkeijerfeb.workers.dev
104.21.8.203
1103290e25ebda2712abe344a87facbac00ddaba712729be9fe5feef807bf91b
c94f098b8ce2b4f6082bd7e2e4befc76618881d5ef96876c8506562ff5d29ada
f1591a5221136c49438642155691ae6c68e25b7241f3d7ebe975b09a77662016
fe36edb08f118bfab9dbbc981fe1f965a81546804acce7a5831f60e59831b074

clouds-mres-b3f5.sfkeijerfeb.workers.dev Open in urlscan Pro 104.21.8.203 Malicious Activity! Public Scan

Summary

urlscan.io Verdict: Potentially Malicious

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Page URL History Show full URLs

Page Statistics

5 Requests

100 %HTTPS

0 %IPv6

1 Domains

1 Subdomains

1 IPs

1 Countries

17 kBTransfer

56 kBSize

1 Cookies

3 Outgoing links

Page URL History

Redirected requests

5 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Redirect headers

Request headers

Response headers

Verdicts & Comments Add Verdict or Comment

Potentially malicious activity detected Disclaimer: These verdicts should be used to detect potentially malicious websites, not as a final verdict!

urlscan

1 JavaScript Global Variables

1 Cookies

1 Console Messages

Security Headers

Indicators

clouds-mres-b3f5.sfkeijerfeb.workers.dev Open in urlscan Pro
104.21.8.203 Malicious Activity! Public Scan

Screenshot
Live screenshot

Full Image

5
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

1
Subdomains

1
IPs

1
Countries

17 kB
Transfer

56 kB
Size

1
Cookies

5 HTTP transactions
0 data transactions

Potentially malicious activity detected
Disclaimer: These verdicts should be used to detect potentially malicious websites, not as a final verdict!