PDF malware analysis — malicious · e5436b8213bbd9aa

MALICIOUS

PDF

14.3 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)

MD5: 6b95102f9273a9267ec3b44a8ff84a9e SHA-1: 8674a543fd877633a575f8f67ebd6cc329681a12 SHA-256: e5436b8213bbd9aa2c3c13b34bbff37c9de0a3c6f9cd7d9571345367e49c4748

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

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 code. This JavaScript is likely responsible for downloading and executing a second-stage 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` `cc1791ec01438c3d8ef4c85159626396ef399d4dde36bdb6734e0d83df157992`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74529 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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