Is Add a Download button on YouTube safe to use?

Add a Download button on YouTube has a security risk score of 82.04/100 (HIGH risk). Our security analysis detected 38 findings. Review the detailed security assessment below to understand the specific risks before installation.

What are the security risks of Add a Download button on YouTube?

Based on our automated security analysis, Add a Download button on YouTube presents high risk level. The extension is analyzed for malware patterns, secret exposure, network communications, permissions, and supply chain vulnerabilities.

How is the security score calculated?

Risky Plugins calculates security scores using weighted categories: severity of findings (25 points max), malware detections (35 points), secret exposure (28 points), network communications (10 points), and obfuscation (10 points). Scores range from 0-100, with higher scores indicating greater risk.

What does CRITICAL, HIGH, MEDIUM, LOW, MINIMAL risk mean?

CRITICAL (80-100): Severe security issues like malware. HIGH (60-79): Significant vulnerabilities. MEDIUM (40-59): Moderate security concerns. LOW (20-39): Minor issues. MINIMAL (0-19): Very low risk. Always review findings before installing any extension.

Is "Add a Download button on YouTube" on Firefox Add-ons Safe to Install?

Name: Add a Download button on YouTube
Availability: InStock
Rating: 3 (7 reviews)
Author: Nostrum

Nostrum · firefox · v1.0.12

This extension allows you to download sounds or videos directly from YouTube.

Risk Assessment

Analyzed

82.04

out of 100

HIGH

38 security findings detected across all analyzers

Firefox extension requesting 5 permissions

Severity Breakdown

Critical

High

Medium

Low

Info

Finding Categories

Malware Signatures

IoC Indicators

YARA Rules Matched

2 rules(4 hits)

postinstall file download postinstall file manipulation

Requested Permissions

5 permissions

activeTab

Medium

tabs

Medium

*://*.youtube.com/*

Low

*://youtube.com/*

Low

*://youtu.be/*

Low

Detailed Findings

5 total

YARA Rule Matches

2 rules

Indicators of Compromise

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

URLs

Domains

Strings

All Indicators · 33

URL

detected URL: https://l.armyndev.com/r.php?n=vpn&lg=en'

XIOC detected URL: https://l.armyndev.com/r.php?n=vpn&lg=en'

extracted_from_files

Domain

detected Domain: window.open

XIOC detected Domain: window.open

extracted_from_files

URL

detected URL: https://y2mate.nu/#

XIOC detected URL: https://y2mate.nu/#

extracted_from_files

URL

detected URL: https://www.example.com/?foo='

XIOC detected URL: https://www.example.com/?foo='

extracted_from_files

Hash

detected MD5 Hash: d829f625df2c907bd7077ada01814fd7

XIOC detected MD5 Hash: d829f625df2c907bd7077ada01814fd7

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://l.armyndev.com/r.php?n=vpn&lg=fr'

XIOC detected URL: https://l.armyndev.com/r.php?n=vpn&lg=fr'

extracted_from_files

Domain

detected Domain: signingca1.addons.mozilla.org

XIOC detected Domain: signingca1.addons.mozilla.org

extracted_from_files

URL

detected URL: https://ytmp3x.com/

XIOC detected URL: https://ytmp3x.com/

extracted_from_files

Domain

detected Domain: mozilla.com

XIOC detected Domain: mozilla.com

extracted_from_files

URL

detected URL: https://fr.savefrom.net/1-youtube-video-downloader-138.html?url=https://www.youtube.com/watch?v=

XIOC detected URL: https://fr.savefrom.net/1-youtube-video-downloader-138.html?url=https://www.youtube.com/watch?v=

extracted_from_files

URL

detected URL: https://youtube4kdownloader.com/download/video/https%253A%252F%252Fwww.youtube.com%252Fwatch%253Fv%253D

XIOC detected URL: https://youtube4kdownloader.com/download/video/https%253A%252F%252Fwww.youtube.com%252Fwatch%253Fv%253D

extracted_from_files

Domain

detected Domain: www.youtube.com

XIOC detected Domain: www.youtube.com

extracted_from_files

Domain

detected Domain: 252fwww.youtube.com

XIOC detected Domain: 252fwww.youtube.com

extracted_from_files

Domain

detected Domain: ocommandbutton.id

XIOC detected Domain: ocommandbutton.id

extracted_from_files

Domain

detected Domain: youtube.com

XIOC detected Domain: youtube.com

extracted_from_files

Domain

detected Domain: youtu.be

XIOC detected Domain: youtu.be

extracted_from_files

Domain

detected Domain: www.example.com

XIOC detected Domain: www.example.com

extracted_from_files

Domain

detected Domain: fr.savefrom.net

XIOC detected Domain: fr.savefrom.net

extracted_from_files

Domain

detected Domain: youtube4kdownloader.com

XIOC detected Domain: youtube4kdownloader.com

extracted_from_files

Domain

detected Domain: notube.io

XIOC detected Domain: notube.io

extracted_from_files

Domain

detected Domain: y2mate.nu

XIOC detected Domain: y2mate.nu

extracted_from_files

Domain

detected Domain: opopup.id

XIOC detected Domain: opopup.id

extracted_from_files

Domain

detected Domain: e.target

XIOC detected Domain: e.target

extracted_from_files

Domain

detected Domain: y2mate.com

XIOC detected Domain: y2mate.com

extracted_from_files

URL

detected URL: https://yes-com.fr/convert/?id=

XIOC detected URL: https://yes-com.fr/convert/?id=

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: tf765c7f7ef690d6a6902a1a12636b8f4.d829f625df2c907bd7077ada01814fd7.addons.mozilla.org

XIOC detected Domain: tf765c7f7ef690d6a6902a1a12636b8f4.d829f625df2c907bd7077ada01814fd7.addons.mozilla.org

extracted_from_files

Domain

detected Domain: l.armyndev.com

XIOC detected Domain: l.armyndev.com

extracted_from_files

Domain

detected Domain: ytmp3x.com

XIOC detected Domain: ytmp3x.com

extracted_from_files

Domain

detected Domain: yes-com.fr

XIOC detected Domain: yes-com.fr

extracted_from_files

URL

detected URL: https://notube.io/watch?v=

XIOC detected URL: https://notube.io/watch?v=

extracted_from_files

Security Analysis Summary

Security Analysis Overview

Add a Download button on YouTube is a Firefox Add-ons extension published by Nostrum. Version 1.0.12 has been analyzed by the Risky Plugins security platform, receiving a risk score of 82.04/100 (HIGH risk) based on 38 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: 4 finding(s)
Medium: 34 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

Add a Download button on YouTube is published by Nostrum on the Firefox Add-ons marketplace. The extension has approximately 1K 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.

Source Code Viewer

Source Code Not Available

Source code is not available for this version of the extension.

Frequently Asked Questions

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Risk Assessment

Severity Breakdown

Finding Categories

YARA Rules Matched

Requested Permissions

Detailed Findings

MANIFEST-SENSITIVE-PERM-TABS

YARA Rule Matches

postinstall file download

postinstall file manipulation

Indicators of Compromise

All Indicators · 33

Security Analysis Summary

Security Analysis Overview

Risk Assessment

Findings Breakdown

What Was Analyzed

Developer Information

Recommendation

Frequently Asked Questions

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