PDF malware analysis — malicious · 53649fd92a0dc076

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: 16b45a3761517a04d5b8466d7fef3085 SHA-1: cf973655d600ac14cf59ab7678b1f62734aade1c SHA-256: 53649fd92a0dc076ac5061074805ee698a07626ca3595bc97eef6bb0c7116f1c

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The PDF file was flagged by ClamAV as Win.Trojan.Agent-36166, indicating a known malicious signature. Static analysis revealed embedded JavaScript, which is a common technique for delivering malware. The JavaScript stream is likely responsible for downloading and executing a second-stage payload, contributing to the overall malicious nature of the document.

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` `dbf26e55004e4ef20413576af5d4b05c5b3e91d27b00e2049fa72804677c68f5`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74372 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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