PDF malware analysis — malicious · f1ebbdbedaa2dcd6

MALICIOUS

PDF

7.2 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: d7f8f4bd75b3f2545327f7516aa48e7e SHA-1: 200898e0f5577fbbd4729dd6b15eef98be5028a3 SHA-256: f1ebbdbedaa2dcd688b66b0280200eaa3651e5b46d0c661691b4e4737c7f4936

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript, flagged by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The ML classifier and ClamAV detection strongly indicate maliciousness, identifying it as Pdf.Exploit.Agent-35587. The JavaScript stream, named javascript_obj0013_001.js, contains obfuscated code with eval() calls, suggesting it's designed to download and execute a secondary payload. The reconstructed string 'New_Script AucWl0pCCF' is part of this obfuscated code.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35587 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35587
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `649afcb935940755cb675edbeed110df84e820b60dafe0d0b14ee153b6c5ea8d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x38A	5862 bytes
Detection ClamAV: Pdf.Exploit.Agent-35587 Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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