PDF malware analysis — malicious · 36118cfc2208b1d7

MALICIOUS

PDF

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

MD5: 2f9af8c7eb3e76a1486bd7f31ce4c748 SHA-1: ef22d97c2617965445e953d89abb4670ad6dfc69 SHA-256: 36118cfc2208b1d7426e0af7d3c5aded718a1a2db3c9dfed4879bf275fcaebc9

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by ClamAV (Pdf.Exploit.Agent-35587) and a machine learning classifier. It contains obfuscated JavaScript with eval() calls, indicating an attempt to hide malicious code execution. The script is designed to download and execute a second-stage payload, as suggested by the heuristic firings and the nature of the embedded JavaScript.

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` `52cd82d434fbb573a91dc9ffdba81db8dd094b0e318df9bfc08b87b233a55c6e`	pdf-javascript-stream	PDF /JS object 13 at offset 0x389	5262 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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