PDF malware analysis — malicious · 1ed1ca0d84704bbd

MALICIOUS

PDF

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

MD5: dad9b07d894613b9bb2a86df54adcd47 SHA-1: 37c310ce5a4753cc2d4665f280bac6569eb3f503 SHA-256: 1ed1ca0d84704bbded5b3d2adb395b41f500c9664865d84acadb80efc93a8030

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'. It also contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS firings. The ML classifier strongly suggests maliciousness. The embedded JavaScript is likely responsible for executing the malicious payload, as suggested by the ClamAV detection.

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` `f5fdd75ec13e1a200db2e3033c290e3de80d0633b40d0e84d9bc28bb1f5f2f87`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74559 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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