PDF malware analysis — malicious · 9f030bc2acead292

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: ec179ad157e9e472bf5e81d50a301a1d SHA-1: 6c538536f204d45cd7aa937be92a8dacf0580bc4 SHA-256: 9f030bc2acead2925b7ee4d33e4f3322c46afbc67aadfcc385e0dd5a4a4210a1

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. A high-severity PDF_EVAL heuristic firing confirms the use of eval(), a common technique for obfuscating malicious JavaScript. The ML classifier also strongly flagged this PDF as malicious. The primary function of the embedded script appears to be the execution of arbitrary code, likely to download and execute a secondary payload. No specific family could be identified, and no URLs or other IOCs were directly extracted beyond the use of eval().

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` `02006b42e1af8ae80196d20227f8b8ef3df2c719997c0b8dd56224cd86e401d4`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6425 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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