PDF malware analysis — malicious · 4e8a279bceb843db

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: f4b045b7d2d0221106a9bca82c67abbd SHA-1: ef16ef1d24eed5143457fb59f2994e2376ebc7dc SHA-256: 4e8a279bceb843db60bbc2b8ed0acac3ee96e50889227193ace7f2326bacc571

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Agent-7194) and a high ML score, indicating malicious intent. The presence of embedded JavaScript, identified by PDF_JAVASCRIPT and PDF_JS heuristics, strongly suggests an exploit is being used to run code. The extracted artifact also triggered a ClamAV detection (Win.Trojan.Agent-36166), confirming the presence of a secondary malicious component. The JavaScript likely downloads and executes this payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Exploit.Agent-7194 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-7194
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` `70cf41e6a7e97ec5f5b5252a78095e170c01a38dbd538468da91c7e11c10a049`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74426 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.