PDF malware analysis — malicious · 50326c695983757b

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: a3366494a97d0a584ee34311fd6ff519 SHA-1: 6db4981df7bf3a5c02c471ad39dc8dbbe633db43 SHA-256: 50326c695983757bfa498527a739612b0ed070ce861edee1485d17e3ea5bbf0f

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, which is a common technique for delivering malicious payloads. Heuristic analysis identified JavaScript actions and streams within the PDF. ClamAV detections confirm the presence of malware, specifically Win.Trojan.Agent-36166. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, although the exact functionality is obscured by obfuscation.

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` `add3e4da1ef314d110592af4ffd74f3d2805815556bb775d6ecb7128a06b01d2`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74590 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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