PDF malware analysis — malicious · 1df7e6108851e9c1

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: 184990e258f1675d89bc2c780a6be441 SHA-1: 577ffafb3d271ec5956ac50e6ce40e840be30f80 SHA-256: 1df7e6108851e9c14cdb575f0bb6d72985db8e9ba332f24444dd6ae6c0e90b24

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, flagged by multiple heuristics including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL due to an eval() call. The ML classifier strongly indicates maliciousness. The JavaScript stream, named 'javascript_obj0013_001.js', is obfuscated and likely responsible for executing a secondary payload. The exact nature of the payload could not be determined due to obfuscation, but the presence of eval() and the ML score suggest a high likelihood of malicious code execution.

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` `ea6c69227d53e1b00a60061e79dfe7e5b5209b8b462ae6876c46f501b0d6cad6`	pdf-javascript-stream	PDF /JS object 13 at offset 0x369	6368 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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