PDF malware analysis — malicious · 33539234b1c5e671

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: f879302137dadeeb3775f7354165c4c0 SHA-1: 5bd66f95b0458dd6ae6eb47419cba4fb56a38dd5 SHA-256: 33539234b1c5e671add5bfef8dd2ed7bb5332056ddf0e8d8d76e0d9b6904e65f

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is a common technique for delivering malicious payloads. Heuristic analysis and a machine learning classifier strongly indicate malicious intent. ClamAV detection confirms this, identifying the file as Win.Trojan.Agent-36166. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

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` `d9645674f90099e1109ae575bd718c65a336e3865ff2dfd6fffaaa29ecabf3b4`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74598 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.