PDF malware analysis — malicious · a1d90baafab8ab59

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: 2fd22fa4e39c276c04509b66f543b887 SHA-1: b354367e998f081eefdd1b395e7e96b4e49da6d6 SHA-256: a1d90baafab8ab59dd888522393f0cf48cc6b59e58b5a991ac86c6d3db3d670d

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, flagged by multiple heuristics including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL due to an eval() call. The ML classifier also strongly indicates maliciousness. The obfuscated JavaScript is likely designed to download and execute a second-stage payload, though the exact mechanism is obscured. No specific family could be identified.

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` `0466e7b08ea6bf97542ad4d490b698e5aa284b6fbb6b4418c273ac4817a40f83`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36B	6558 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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