PDF malware analysis — malicious · 1cdea6e7f9bee91a

MALICIOUS

PDF

10.6 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: ca3502e73b603552f16bbb6d08d20a7d SHA-1: 2838b84327709be59988f2898a8b35b26e67c5e4 SHA-256: 1cdea6e7f9bee91aebca797f92255b50968a98c782648ce2454a20f84f02fff9

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious and contains embedded JavaScript streams. Heuristics indicate the presence of JavaScript actions and an eval() call, suggesting code execution. The obfuscated JavaScript likely attempts to download and execute a second-stage payload. No specific family could be identified due to the heavy obfuscation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `76a1065a2321155015a79a7023da8fca902da686229529b9dcc02460dc0e4cc4`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	9292 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).
`javascript_obj0013_001.js` `56d23497bd2fdfc42c36de1b2ff31d0c6e57d20b144e0f8ca5ef8e150a979786`	pdf-javascript-stream	PDF /JS object 13 at offset 0x358	9998 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).

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