Black Toyota Supra Live Wallpaper

AI Security Review

Evidence context: threat category none; evidence quality weak.

This extension presents a classic false-positive scenario driven entirely by YARA code-smell rules rather than actual malicious behavior. All 17 findings are categorized as code-smell in the findings_summary, despite being labeled with "high" severity in the malware-signature category. The finding titles—YARA--postinstall_file_manipulation, YARA--postinstall_system_command, YARA--postinstall_network_communication, YARA--NoUseWeakRandom, YARA--postinstall_file_download, YARA--postinstall_obfuscation, YARA--SQLInjection, and YARA--postinstall_crypto_operations—match the documented false-positive pattern of postinstall_* rules that fire on almost any non-trivial JavaScript.

The critical issue is that every finding references "unknown_file" as the file path, preventing verification of actual code behavior. This data quality problem compounds the false-positive nature of the findings. According to the guidelines, "postinstall_* rules match basic Node.js patterns (fetch, exec, fs, crypto, process.env)" and "should NEVER drive a verdict."

There are zero actual IoCs, zero network findings, zero obfuscation detections, and zero real malware signatures. The findings_summary explicitly shows "ioc":0,"malware-signature":0,"network":0,"obfuscation":0 with all 17 findings categorized as code-smell. The extension description states it provides "stunning live wallpapers" for new tabs, which is consistent with legitimate wallpaper extensions.

The strongest counterargument would be the 17 "high severity" labels and the suspicious version number 9.9.9. However, severity labels are unreliable when findings are code-smell patterns that fire on normal JavaScript operations. The version number alone does not indicate malice without supporting behavioral evidence. A legitimate wallpaper extension would naturally use file operations, network requests for wallpaper content, and crypto functions for user preferences—all triggering these code-smell rules.

Without actual malware signatures, suspicious domains in IoCs, or obfuscation in the code, there is no evidence of intentional harm. The personal Gmail developer address is a minor concern but not sufficient to override the absence of malicious indicators.

Key Reasons

• All 17 findings are code-smell postinstall_* rules
• No actual malware signatures detected
• No IoCs, network activity, or obfuscation found
• All file paths are unknown_file indicating data quality issues

False Positive Considerations

• postinstall_* YARA rules on normal JavaScript
• all findings reference unknown_file
• findings_summary shows code-smell not malware-signature
• zero actual IoCs or network findings

Reviewed 2026-05-06; recommended action: suppress false positive; model confidence 85%.