PDF malware analysis — malicious · 222dbbbb2c23c521

MALICIOUS

PDF

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

MD5: cafa920f7a5c96db4126e7b3ea816c46 SHA-1: 5564a61415e6be070832b609b11b4baf1d8660cb SHA-256: 222dbbbb2c23c5211d29bce418c54c94326144a381973dee97ca121be6199871

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristic firings. The critical ClamAV detection 'Win.Trojan.Agent-36166' strongly suggests malicious intent. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for malware delivery via PDF documents. The document body is unreadable, but the technical indicators are sufficient for a high-confidence assessment.

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` `1383759e8d60136ea2bbb207d61972ad424609ad2aae151514a081e560413e99`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74224 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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