Security Alert: Confirmed Malware

This extension was removed from the Chrome Web Store as malware. Do not install it.Extension: Adburner

CRITICAL RISKRemoved from Chrome Web Store

Adburner

ID: cegbjdefhfnbphoghdgcapnliodjbncp

Could be malicious

Extension Info & Metadata

Status

Removed

Version

3.0.18

Size

0.76 MB

Rating

4.7/5

Reviews

Users

927,003

Type

Extension

Updated

Dec 3, 2020

Publisher Contextual Analysis

Author: Hilton SmithView Profile
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes

Total Extensions

Active

Obsolete

Listed

Unlisted

Total Users

927,003

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Remove ads and annoying content from webpages.

Hate ads? Adburner will 🔥 em for you. Adburner is an ad-blocking app, filtering out ads from web pages. Why Adburner? * We select the best filter lists, up to date * No acceptable ads policy * No bells and whistles, setup is not required

User Growth

No data available

No user growth data available for this extension

Rating Count

No data available

No rating count data available for this extension

Average Rating

No data available

No rating data available for this extension

Extracted Data

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By severity

Critical3

High6

Medium2

Low0

Versions scanned

Showing 2 of 2 scanned versions with more than one unique finding. Counts are unique findings that include each version.

Extension Version	Code Review Findings
3.0.18 Code review	3
3.0.17 Code review	8

Extension Version	Code Review Findings
3.0.18	3
3.0.17	8

Files with findings

6 distinct paths — top paths by unique finding count:

lib/easyadblock.js4
include.preload.js3
ext/background.js1
manifest.json1
popup.html1
subscriptions.xml1

S.No.	Category	Severity	File	Summary	Found in Version
1	Network Interception	critical	lib/easyadblock.js (line 820)	All filter subscription URLs (EasyList, exception rules, anti-adblock rules) are routed through the operator-controlled domain `rules.easyadblocker.com` rather than the official EasyList/AdBlock Plus sources. Critical…	3.0.17
2	Network Interception	critical	subscriptions.xml (line 5)	All 20+ filter list URLs listed in subscriptions.xml reference `rules.easyadblocker.com` as the actual download source, despite using legitimate third-party homepages (easylist.to) to appear trustworthy. This means th…	3.0.17
3	Remote Code Loading	critical	ext/background.js (line 44)	The background script dynamically injects a remote Google Tag Manager script into the extension context. In a Chrome extension, loading remote JavaScript into a privileged background page is a critical supply-chain ri…	3.0.18
4	Code Injection	high	include.preload.js (line 1469)	The content script uses `contentWindow.eval()` to inject a serialized copy of the `injected` function into every iframe and frame on every page visited. The `injectedToString()` call serializes the function at runtime…	3.0.17
5	Code Injection	high	include.preload.js (line 1734)	On every page load, the content script dynamically creates a `<script>` element containing a blob URL with inline JavaScript built by stringifying the `injected` function, then immediately appends and removes it from …	3.0.17
6	Network Interception	high	lib/easyadblock.js (line 5989)	The extension registers a blocking webRequest listener on `<all_urls>` with the `blocking` flag, giving it the ability to cancel any sub-resource request on any website. While used for ad blocking, this listener evalu…	3.0.17
7	Remote Code Loading	high	manifest.json (line 32)	The manifest explicitly allows extension pages to execute scripts from Google Tag Manager and Google Analytics domains. This weakens extension integrity and, together with the background-page loader, enables remotely …	3.0.18
8	Remote Code Loading	high	lib/easyadblock.js (line 4989)	The extension periodically fetches JSON data from `cdn.easyadblocker.com/notification.json` and parses it as a notification command payload. This creates a persistent remote command channel to the operator's CDN. The …	3.0.17
9	Unauthorized Data Collection	high	lib/easyadblock.js (line 4746)	On first run, the extension silently subscribes users to 'Acceptable Ads' via the operator's `rules.easyadblocker.com/exceptionrules.txt`. This opt-out-by-default exception list allows the operator to decide which adv…	3.0.17
10	Code Injection	medium	include.preload.js (line 1332)	This content script injects code into page/frame contexts by calling `contentWindow.eval()` with a constructed string. Even if intended for ad-blocking, this is a code-injection pattern that crosses the extension isol…	3.0.18
11	Tracking	medium	popup.html (line 5)	The extension popup loads a CSS stylesheet from an external CDN (`cdnjs.cloudflare.com`) rather than bundling it locally. Every time a user opens the extension popup, a network request is made to Cloudflare's CDN, pot…	3.0.17

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URLs

140

IPv4

IPv6

URLs

View the external URLs this extension communicates with to understand its network activity and data interactions.

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www.googletagmanager.com	/gtm.js	https://www.googletagmanager.com/gtm.js?id=GTM-N5L7WX8&l=
bugs.chromium.org	/p/chromium/issues/detail	https://bugs.chromium.org/p/chromium/issues/detail?id=665843
chromium.googlesource.com	/chromium/src/+/02d3f50b/content/browser/frame_host/navigation_request.cc	https://chromium.googlesource.com/chromium/src/+/02d3f50b/content/browser/frame_host/navigation_request.cc#473
chromium.googlesource.com	/chromium/src/+/39a7d96/net/http/http_response_headers.cc	https://chromium.googlesource.com/chromium/src/+/39a7d96/net/http/http_response_headers.cc#929
chromium.googlesource.com	/chromium/src/+/02d3f50b/content/browser/loader/mime_sniffing_resource_handler.cc	https://chromium.googlesource.com/chromium/src/+/02d3f50b/content/browser/loader/mime_sniffing_resource_handler.cc#534
chromium.googlesource.com	/chromium/src/+/02d3f50b/net/http/http_content_disposition.cc	https://chromium.googlesource.com/chromium/src/+/02d3f50b/net/http/http_content_disposition.cc#374
chromium.googlesource.com	/chromium/src/+/16e2688e/net/http/http_util.cc	https://chromium.googlesource.com/chromium/src/+/16e2688e/net/http/http_util.cc#431
chromium.googlesource.com	/chromium/src/+/99f41af9/net/http/http_util.cc	https://chromium.googlesource.com/chromium/src/+/99f41af9/net/http/http_util.cc#66
chromium.googlesource.com	/chromium/src/+/3130418a/net/base/mime_sniffer.cc	https://chromium.googlesource.com/chromium/src/+/3130418a/net/base/mime_sniffer.cc#667
*	/*	http:///

Showing 1 to 10 of 140 rows

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1.3.14.3	IPv4	-
2.3.3.3	IPv4	-
2.3.3.1	IPv4	-

3.6 out of 5 · 10 most recent reviews

Text reviews

Positive

Negative

This is amazing everyone should get this it's so helpful and I didn't even notice that there was a choice to turn it off or on i realized it after reading another comment.

Malisha Rahman·19 Jan 2021

I love it

Benedikt Audy·17 Jan 2021

best ads blocker u can use this is the best

Okunlola Gbenga·17 Jan 2021

Version History

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Code Diff

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0 changed files detected

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Security Alert: Confirmed Malware

Adburner

Extension Info & Metadata

Publisher Contextual Analysis

Chrome Web Store Metadata

About this extension

Analytics & Metrics

User Growth

Rating Count

Average Rating

Static Code Security Analysis

Extracted Data

Code Review Findings Summary Across 2 Versions11

Versions scanned

Files with findings

Extracted Indicators (URLs and IPs)

URLs

Contextual Analysis

User Reviews

Version History

Version-to-Version Code Diff

Code Diff

Extension Files

User Growth

Rating Count

Average Rating

User Reviews