PDF malware analysis — malicious · df811d010a71a698

MALICIOUS

PDF

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

MD5: 9c1d70af4ffe62919e7a0f4c01befe37 SHA-1: 96fa8261611a50b2e5e35d9ed98e7a75879d259f SHA-256: df811d010a71a6984639a28a58d19d6e70d0fd38610e53a968ecd60f5e91a863

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The file is a PDF document identified by ClamAV as Win.Trojan.Agent-36166. Static analysis detected embedded JavaScript, which is often used to download and execute additional malicious content. The presence of JavaScript actions and embedded JS streams strongly suggests this malicious intent. No specific family could be identified, but the techniques used are common 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` `9f35b6497d096bc9b42f0e2143abd20ea1289d91a298e3547976c32133745070`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75114 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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