PDF malware analysis — malicious · 8892a91f08d3d407

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: 37bba376c3e319ccefaab4393ef96e08 SHA-1: f7ef0b2ba4921e9ad5d7464d0a7e7ed6e6ce991c SHA-256: 8892a91f08d3d407afb4e2a003f00b1345d9fc80895ab25551bd3a6e83a968bf

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating the document is designed to execute malicious code. The JavaScript stream is likely responsible for downloading and executing a secondary payload, which is a common technique for malware delivery.

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` `75c026fd6dc72de8ec009e4ceb85df3128a7aab1a981b6c81f8b2b8a0e0a1712`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74562 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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