PDF malware analysis — malicious · 223b6a41dee053e1

MALICIOUS

PDF

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

MD5: 832edc609077f11631936636003e6e58 SHA-1: 6f919d3570f2d66276d5672fc977a1c6b85829a2 SHA-256: 223b6a41dee053e1d1862c0ed775210ac32cac074889207c1b31ac37d99cca29

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The file is a PDF containing embedded JavaScript, identified by heuristics as a potential attack vector. ClamAV signatures indicate it is a known trojan (Win.Trojan.Agent-36166). The embedded JavaScript is likely responsible for downloading and executing a secondary payload, which is a common technique for malware delivery. The document body itself does not contain readable content, so the analysis relies on the script and heuristic findings.

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` `f7d5c7ab91900a699aa94ad945eccb50f3836ce35fcf3e6e29602e501050cb61`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	76167 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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