PDF malware analysis — malicious · a9d96a9dd5a4334c

MALICIOUS

PDF

14.5 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)

MD5: ff02bdfc24b9ed3a2c15bb77a81126ae SHA-1: 14620ef78ed9e6ca1789c2bde7a2e607220aedea SHA-256: a9d96a9dd5a4334c775f276eed2c46749ff93634d7cab459a291fa6023c51532

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by multiple engines, including a high-confidence ML classifier and ClamAV, which identified it as Win.Trojan.Agent-36166. The presence of embedded JavaScript, indicated by heuristic firings, suggests an attempt to exploit vulnerabilities or execute malicious code. The primary attack vector appears to be the embedded JavaScript, likely intended to download and execute a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Win.Trojan.Agent-36166 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-36166
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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `dba4b7246546852583c018a87a59343e00d206d4df1f5d2e1f52ab5cfb1453d9`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75200 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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