PDF malware analysis — malicious · 1ebac0ef1831f641

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: 9c856f6b108cf0f681db300bebac16ad SHA-1: 301ddcd747f0e4b95546def88ef7c7a4d85661fb SHA-256: 1ebac0ef1831f641434e0cccaeaa56505369d27766e681c2468128141a83f903

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by ClamAV as Win.Trojan.Agent-36166, indicating a known malicious signature. Static analysis also identified embedded JavaScript, which is often used to download and execute further stages of malware. The presence of JavaScript actions and embedded JS streams strongly suggests an attempt to deliver a malicious payload, likely through the execution of the embedded script.

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` `25dd9a6b27cd80c62fab9caa4bfc96f7d7595212d90f7514362a26ad6a39f011`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74506 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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