PDF malware analysis — malicious · d71f8da9a20c4a81

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: 222e5e66af68f64a3a9e7ad908f326b2 SHA-1: d0c98bc8154f50a381c3a82090ddea6208942063 SHA-256: d71f8da9a20c4a811544f4c5ba9ea9292e5309e8460f0ea461dca0b7bf662b20

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections (Win.Trojan.Agent-36166) confirm the malicious nature of the file and suggest it is a trojan agent. The embedded JavaScript is likely responsible for executing the malicious payload, which is consistent with the identified ClamAV signature.

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` `9a2b33e0e5015af14619bea733cc630e194c6465ef78d7cd6ae269766e4c75e1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75183 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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