PDF malware analysis — malicious · f50e16b5b88f875b

MALICIOUS

PDF

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

MD5: e4fd68f03fa57fb4a89b4963f5853772 SHA-1: 0e8dbf3e426443cc55f9829c15bace67da0b7186 SHA-256: f50e16b5b88f875b26d7c5640edffb45a503866256be148d748ff6db782f40c2

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF was flagged by multiple heuristics, including critical ClamAV detections for 'Win.Trojan.Agent-36166', indicating a known malicious signature. The presence of embedded JavaScript, identified by PDF_JAVASCRIPT and PDF_JS heuristics, strongly suggests that the script is responsible for executing the malicious payload. The ML classifier also provided a very high confidence score for maliciousness. The document body content is unreadable, but the combination of JavaScript and ClamAV detection points to a malware delivery mechanism.

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` `644532cd90bcc4a5c5b39cd50f651075dce0b351dfb0a21cb96d975f224f3551`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75921 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.