PDF malware analysis — malicious · eb2bc4f099039dfe

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: 767824086f6ac62f1cfd56ceeed35293 SHA-1: f09df9e04e99d8d92424bd8e927b9b165e123e26 SHA-256: eb2bc4f099039dfe71cba07e8034d052de6ad1ae15095e0b601a53bc01b2825c

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, which is a common technique for delivering malicious payloads. ClamAV detections of 'Win.Trojan.Agent-36166' strongly suggest the presence of a known trojan. The JavaScript action and embedded JS stream heuristics further support the malicious nature of the file. The document body is unreadable, but the combination of PDF structure and JavaScript points to a trojan delivery mechanism.

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` `cd215d98fe7bf0b7357b6e81e12c2dc69706da13b8b9bd4e9cfaa6b5bdded965`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75179 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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