PDF malware analysis — malicious · 2711c6174ae17d95

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: 640898d8f18d6eb97dce0eea9a5a2ce8 SHA-1: e5cf3d51dc2b44a3171404ac9506c40180641038 SHA-256: 2711c6174ae17d95f907f719145049afe6ea269b05373cac931f4c929a55f057

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript, indicated by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics. ClamAV detections confirm this is a malicious artifact, specifically identified as 'Win.Trojan.Agent-36166'. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for this type of threat.

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` `11cba48b8115e02a1a20c0e70fa5bc4caf5dd320f5486e647e941e625969bc4f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75136 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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