PDF malware analysis — malicious · d367d3cce10f7f2a

MALICIOUS

PDF

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

MD5: d9a67806398e7ee053d43e1f6effa77d SHA-1: 3d6de70bf594c002495c0b59e1ce066149f8752e SHA-256: d367d3cce10f7f2a70c1028a208cc8d096e3a6c1289c8286a95313db54f024e4

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Win.Trojan.Agent-36166'. Embedded JavaScript was also detected, which is commonly used to download and execute secondary payloads. The ML classifier also provided a very high confidence score for maliciousness. The document body was unreadable, but the presence of JavaScript and the ClamAV detection strongly indicate a malicious downloader.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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` `186ceb467029d1569685f9dc75bfdb1259cf27147411459b112a13ce3602f9e6`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	76121 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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