PDF malware analysis — malicious · 5912c6f2e1c0cda8

MALICIOUS

PDF

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

MD5: a0a50e3e8f1669df2c7a9cd10e258eb3 SHA-1: 8c963c3252d8366e37af93bdb5a0a685eb277f0f SHA-256: 5912c6f2e1c0cda8607155ef4edfa612207051f06b7787e9b40c06cf9f474920

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. The ML classifier strongly indicates maliciousness. The JavaScript stream, named 'javascript_obj0013_001.js', appears to be obfuscated and contains an eval() call, suggesting it's intended to download and execute a second-stage payload. The authoring application 'Scribus' is not directly indicative of malicious intent but the presence of obfuscated JavaScript is a strong indicator.

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` `db0cb79c402fbec3eb6fc243dd240b0d6c28b0e7d3a0ea30dc6b37e1495df475`	pdf-javascript-stream	PDF /JS object 13 at offset 0x369	6285 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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