Is "GTmetrix Analyzer GM" on Firefox Add-ons Safe to Install?

Cecil Banks · firefox · v1.3

Quickly analyze the performance of any webpage using GTmetrix API.

Risk Assessment

Analyzed
84.9
out of 100
HIGH

23 security findings detected across all analyzers

Firefox extension requesting 4 permissions

Severity Breakdown

0
Critical
5
High
18
Medium
0
Low
0
Info

Finding Categories

5
Malware Signatures
2
Network
15
IoC Indicators

YARA Rules Matched

3 rules(5 hits)
postinstall obfuscation postinstall network communication postinstall file download

Requested Permissions

4 permissions
tabs
Medium
activeTab
Medium
storage
Low
https://gtmetrix.com/*
Low

About This Extension

Quickly analyze the performance of any webpage using GTmetrix API.

Detailed Findings

8 total

YARA Rule Matches

3 rules

Indicators of Compromise

Network indicators, suspicious strings, and potential IoCs extracted during analysis

URLs
4
Domains
10
Strings
15

All Indicators · 15

Domain
detected Domain: signingca1.addons.mozilla.org

XIOC detected Domain: signingca1.addons.mozilla.org

extracted_from_files

Domain
detected Domain: d.results.page

XIOC detected Domain: d.results.page

extracted_from_files

Domain
detected Domain: d.results.report

XIOC detected Domain: d.results.report

extracted_from_files

URL
detected URL: http://addons.mozilla.org/ca/crl.pem0N

XIOC detected URL: http://addons.mozilla.org/ca/crl.pem0N

extracted_from_files

URL
detected URL: https://gtmetrix.com/api/0.1/test

XIOC detected URL: https://gtmetrix.com/api/0.1/test

extracted_from_files

URL
detected URL: https://gtmetrix.com/api/0.1/test/$

XIOC detected URL: https://gtmetrix.com/api/0.1/test/$

extracted_from_files

URL
detected URL: https://gtmetrix.com/*

XIOC detected URL: https://gtmetrix.com/*

extracted_from_files

Hash
detected MD5 Hash: 7950c4c933010fd98997946e23326f97

XIOC detected MD5 Hash: 7950c4c933010fd98997946e23326f97

extracted_from_files

Domain
detected Domain: mozilla.com

XIOC detected Domain: mozilla.com

extracted_from_files

Domain
detected Domain: addons.mozilla.org

XIOC detected Domain: addons.mozilla.org

extracted_from_files

Domain
detected Domain: content-signature.mozilla.org

XIOC detected Domain: content-signature.mozilla.org

extracted_from_files

Domain
detected Domain: t5dada8e621106f837a3370fdfcd2c854.7950c4c933010fd98997946e23326f97.addons.mozilla.org

XIOC detected Domain: t5dada8e621106f837a3370fdfcd2c854.7950c4c933010fd98997946e23326f97.addons.mozilla.org

extracted_from_files

Domain
detected Domain: gtmetrix.com

XIOC detected Domain: gtmetrix.com

extracted_from_files

Domain
detected Domain: www.inkscape.org

XIOC detected Domain: www.inkscape.org

extracted_from_files

Domain
detected Domain: response.data

XIOC detected Domain: response.data

extracted_from_files

Security Analysis Summary

Security Analysis Overview

GTmetrix Analyzer GM is a Firefox Add-ons extension published by Cecil Banks. Version 1.3 has been analyzed by the Risky Plugins security platform, receiving a risk score of 84.9/100 (HIGH risk) based on 23 security findings.

Risk Assessment

This extension presents critical security risk. Severe issues were detected, potentially including malware indicators, exposed secrets, or dangerous behaviors. Installation is strongly discouraged until these issues are addressed.

Findings Breakdown

  • High: 5 finding(s)
  • Medium: 18 finding(s)

What Was Analyzed

The security assessment covers multiple analysis categories:

  • Malware Detection: YARA rule matching against 2,400+ malware signatures
  • Secret Detection: Scanning for exposed API keys, tokens, and credentials
  • Static Analysis: Code-level security analysis for common vulnerability patterns
  • Network Analysis: Detection of suspicious network communications and endpoints
  • Obfuscation Detection: Identification of code obfuscation techniques

Developer Information

GTmetrix Analyzer GM is published by Cecil Banks on the Firefox Add-ons marketplace. The extension has approximately 3 users.

Recommendation

This extension is not recommended for installation without thorough manual review. Consider alternatives with lower risk scores, or contact the developer to address the identified security concerns.

Frequently Asked Questions