PDF malware analysis — malicious · 3b0ae42a77772256

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: 37b983e39321ebc8676bcccec3de35e9 SHA-1: 060f6e00bb1b4c140f6615b66b7b3f3c593c01c0 SHA-256: 3b0ae42a77772256d3856fb8863360b1d8f539cbdf220380e828af696fa81c99

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, indicating obfuscated code execution. The ML classifier strongly supports a malicious verdict. The primary artifact is a JavaScript file, javascript_obj0013_001.js, which likely downloads and executes a second-stage payload. The exact nature of the payload is not discernible from the provided evidence.

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` `09efa5fda358cebe47ee0adc222d8204bc8334ce2d059c2f4772ff87e064ded2`	pdf-javascript-stream	PDF /JS object 13 at offset 0x365	6286 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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