PDF malware analysis — malicious · ba46f57651e6af80

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: 4c6042819918b670b455e0bb5c65d089 SHA-1: c5216cdc28e39b05e30673a0d2d79f1472ba0a3d SHA-256: ba46f57651e6af801b820dd7a5e6444b21d4919b4d76ce36fa2eaf20697b887b

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The file is identified as a PDF with embedded JavaScript, triggering critical heuristics for ClamAV detection as 'Win.Trojan.Agent-36166'. The presence of JavaScript actions and embedded JS streams strongly suggests that the document is designed to execute malicious code. The primary intent appears to be downloading and executing a second-stage payload, as indicated by the critical ClamAV detections.

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` `a13735b70caa5460c896684bb789b93ad610ca0611b78983c221ff297b77e296`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74385 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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