PDF malware analysis — malicious · d79664967deac763

MALICIOUS

PDF

4.7 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 96ea39c69de36c0e502463f856e657f0 SHA-1: 53c81babcc10ed25a1b001fd674173b6a0cac755 SHA-256: d79664967deac763b914c4d8fa97eee90ab8cfa542da6e503978839c152bfb3a

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains obfuscated JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call (PDF_EVAL) suggests that the script is designed to execute arbitrary code. The ML classifier strongly flags this PDF as malicious. The script's intent is to download and execute a second-stage payload, though the exact URL is obfuscated within the script.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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_obj0013_001.js` `37e5b84f2f91ce0e99eea7d1cfcc0a023ff7d99859f25b37aea9ae8ad61a289f`	pdf-javascript-stream	PDF /JS object 13 at offset 0x365	6491 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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