PDF malware analysis — malicious · e20317c5c636f4ea

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: 37dc45487d89fb3525efa2a5c6ef64e0 SHA-1: 4c47a83a2f34b3a7b6de165c327cda8a355153b8 SHA-256: e20317c5c636f4ea3ce0d114be47ab84975651408ec7b6336c1292c233559540

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a high-severity PDF_EVAL firing suggests the JavaScript is obfuscated and uses eval() to execute, a common technique for delivering malicious payloads. The ML classifier strongly supports the malicious nature of the PDF. No document body text was available for analysis, but the script's obfuscation and use of eval() point to an attempt to download and execute a second-stage payload.

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` `3727936bcf6e72ab904a6c1c86fbbd8391eca437517c27aa528b07ffc1ac994e`	pdf-javascript-stream	PDF /JS object 13 at offset 0x365	6381 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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