PDF malware analysis — malicious · d6e5625d38e808df

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: b7edfb441d8e5570c9209d7999711fd4 SHA-1: bc21ceacaeee9521c6a2824e1c0188419979d9c9 SHA-256: d6e5625d38e808df058d92d9c81d50b6226cb749df6c12778e3dd77e92466b7a

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a PDF_EVAL rule firing suggests the JavaScript is obfuscated and likely malicious, aiming to execute arbitrary code. The ML classifier strongly supports this assessment. The embedded JavaScript file, 'javascript_obj0013_001.js', is the primary artifact of interest, and its execution is the likely vector for further malicious activity, such as downloading 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` `3b9ff4f09010da2711885ac1c27a37870240f12119136eceb893c697c4b3d26b`	pdf-javascript-stream	PDF /JS object 13 at offset 0x366	6392 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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