PDF malware analysis — malicious · 895a347d9ba9e2f7

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: cb84540c1b7a82b80ff3e11deca22b02 SHA-1: 49badd9bc366add5bf2f2273be1e6b42c12ffea4 SHA-256: 895a347d9ba9e2f710d36856991758d62cb924fb294108e0f4d19785d18d3bc9

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 an attempt to execute malicious code. The JavaScript likely functions as a downloader for further malicious payloads. The presence of PDF-specific heuristics further supports the 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` `013d7ec36ef9bce889422ac06a51793f1e3d2250ded49daf18f4c8fc58e55ff4`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74579 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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