PDF malware analysis — malicious · 58673c6053b76686

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: d48b79279e88c4eaf8899e18129c5307 SHA-1: 2c6cf3704e96d1a7f4f3bcead94ed718c6fd3c6d SHA-256: 58673c6053b766868ccbc8a7819da4b00cde3f2872fe9448dfd1dbbe14b631b6

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 malware signature. Static analysis revealed embedded JavaScript, suggesting an attempt to execute malicious code upon opening the document. The presence of JavaScript actions and embedded JS streams points towards a delivery mechanism for further malicious activity.

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` `cf46d05909cec35bbcd7821074b6d02f1b3648e0cc1e03416cc22d061e61b007`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74012 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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