PDF malware analysis — malicious · 009b2ecc25573954

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: e1d19624e4e79ab997f34eee3e0e5153 SHA-1: bc7af17ec4d5e926524857b741c945e8a1ff7fbe SHA-256: 009b2ecc2557395484c044f9c58f8f0e86ca0232c5a6904f5b083da8591bf10e

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection for 'Win.Trojan.Agent-36166'. It contains embedded JavaScript, which is a common technique for delivering second-stage payloads. The JavaScript appears to be obfuscated, but its presence strongly suggests an intent to download and execute additional malicious code.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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` `b38815b9dd1be5ab64e21c6f6bb5516b95cc27c1145d5b21e020d2ea4f67baf0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75175 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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