PDF malware analysis — malicious · 86bf221464cecf61

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: 54d2b5b1acc75d23bfc679ed6f187699 SHA-1: 729a00145ed954df729190777c52a1b974ec9ebf SHA-256: 86bf221464cecf61448faad0f5dcc9adc5f79f8cbeb40d0aad706c40671e8eab

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is a common technique for delivering malicious payloads. ClamAV detections of 'Win.Trojan.Agent-36166' strongly suggest this file is part of a malware distribution campaign. The embedded JavaScript likely facilitates the execution of this detected malware.

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` `68b1891a8c6a6287f14f64b2bea7850eec35c523e65592026db7f730ff9d1f28`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74617 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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