PDF malware analysis — malicious · 32b16718881dc742

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: e9568838358849f169e24506bcf0dc29 SHA-1: 92808ef26f69ff797430bc1927b4ce15bf8b32d0 SHA-256: 32b16718881dc742eecf18f6e96ea98286a9d0bd54e96d4d861c9cc9becadf8b

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by multiple engines, including a critical ClamAV detection for 'Win.Trojan.Agent-36166'. The presence of embedded JavaScript, identified by heuristic firings, strongly suggests that the document is designed to execute malicious code. The primary function of the embedded script is likely to download and execute a second-stage payload, which is a common technique for malware delivery.

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` `bc7596b4d61bdb6cb507153e0ca81cbbeae4a67103484b16511ba045b3f525ca`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74345 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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