PDF malware analysis — malicious · 3dc87a7c518b0107

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: 96242458d1beaa9db2e7bd861ffd830e SHA-1: 7890c06b14f3e7c3220a61c1723dc7b65ad9a4a5 SHA-256: 3dc87a7c518b010794dd2310719f19fa74ed3a79cf5dff4ba9517ea6cd2e959b

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. Heuristics indicate the presence of embedded JavaScript, which is often used to download and execute further malicious content. The document body is unreadable, but the combination of the ClamAV detection and the JavaScript presence strongly suggests a malicious intent, likely a downloader or droppper.

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` `71db2356921f01c68c29bb212b851c8a7037ca246cade711549b931a82d58881`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74730 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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