PDF malware analysis — malicious · d6a1cef0c21fc768

MALICIOUS

PDF

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

MD5: b19351200d9ad83fc0e608cf4e5be5db SHA-1: 413d3fc094ff34f09246cfda54fdcca717c35986 SHA-256: d6a1cef0c21fc7681db66b7d1701c325ab868eb5f47bed6c131d4296298f0454

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating a potential for malicious code execution. The JavaScript stream is likely responsible for downloading and executing a second-stage payload, which is a common technique for malware delivery. The document body was unreadable, so the rationale is based on the heuristics and ClamAV detection.

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` `5d8f53902a3f2058a10acd9991e9625a03edfdbd066f6ce5c5441044233f89c9`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74771 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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