PDF malware analysis — malicious · 9daffacd0a4e4116

MALICIOUS

PDF

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

MD5: 60339fc6b84935a7235a92e685f73f43 SHA-1: 84d3adcb88c514879e7801e5bcd20237a27fac76 SHA-256: 9daffacd0a4e4116e74a949f41b6f4aedc78c1397658243c24fd69e318b5345f

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by ClamAV as Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, which is often used to download and execute further stages of malware. The JavaScript action and embedded JS stream heuristics indicate this malicious behavior. The document body was unreadable, preventing further context from that source.

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` `565cf82046a82193b9281529383b00acb7604c09be7ba0d74a0742d69979bf98`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	83967 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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