PDF malware analysis — malicious · 938087a751a9ff2e

MALICIOUS

PDF

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

MD5: dfe549e4cd6fdf0ab64a87d9a88f347f SHA-1: 87473c13f92f0493932eff0ad373bf45e695886d SHA-256: 938087a751a9ff2e8fe96132a9cfdce584663201c5e97fbb07edd4f81a5997da

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, a common technique for delivering malicious payloads. Multiple heuristics, including a critical ClamAV detection for 'Win.Trojan.Agent-36166', confirm its malicious nature. The ML classifier also strongly flagged this PDF. 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` `c49860d2af5306c8e7ede55e8b75ac2b53be5d686f01ca79c156b2e8532b9bb9`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74754 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.