PDF malware analysis — malicious · 67796cb48c721f74

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: fd26186990dfe6da193f34c30e355597 SHA-1: 34f1ed0822dbfbda09c2dec801fdbf36c98b06cd SHA-256: 67796cb48c721f74d971d14eaf85ec86a85bb7ca4448f5eecf3a36c9d67ea399

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript

The PDF file contains embedded JavaScript, identified by heuristics and a high ML score, which is indicative of malicious intent. ClamAV detections further confirm its malicious nature, flagging it as a dropper. The JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7268457-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7268457-0
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` `c8882dcb4fb59fedb6409d80223cd72b3f190306813d1522ed4b4143ab38c218`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74447 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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