PDF malware analysis — malicious · 30413027e5e217bb

MALICIOUS

PDF

3.0 KB

MD5: db6073d1d4d4fec4d6d7dc715641475f SHA-1: db8e763169fabd7015f1557870ba4b425d3c7ed6 SHA-256: 30413027e5e217bb4c47210e6e071f37156cd7091e21c46f60f6569aa5a7d24f

148 Risk Score

Malware Insights

MITRE ATT&CK

T1027 Obfuscated Files or Information

The PDF contains embedded and obfuscated JavaScript, as indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_UNESCAPE. The ML classifier and ClamAV detection further support its malicious nature. The embedded JavaScript file, javascript_obj0006_000.js, is likely responsible for executing the malicious payload, though its specific actions are obscured by obfuscation.

Machine Learning

Nyx PDF Classifier malicious score 0.9852

Heuristics 5

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `a8613777a11501247ceb0fa3247ad24d123b2aaf82e13c9d7e88709679e500b8`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1C8	1679 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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