PDF malware analysis — malicious · 348f835a96c653c3

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: 0ceba2721759470010e3367d23a2bff3 SHA-1: 60a497e79992932acb7ddfb6914f7d15719db26d SHA-256: 348f835a96c653c3958a4ae87e93b501425a54165a7b8cf6fee617da4f859bee

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV with the signature Pdf.Exploit.Agent-35587. Static analysis revealed embedded JavaScript with multiple eval() calls, indicating obfuscation designed to hide malicious code. The ML classifier also strongly flagged this PDF as malicious. The primary intent appears to be executing an exploit via the obfuscated JavaScript, likely to download and run a second-stage payload.

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` `be97561069496f1fb2429c200432e41dd8917c516d79801782d1cd673afd78ed`	pdf-javascript-stream	PDF /JS object 13 at offset 0x38C	5802 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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