PDF malware analysis — malicious · ba457654d2a27633

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: ff0110e79027aa06c5aafd20ae9dd895 SHA-1: d0b54fcf9ba72caf9cffe33f41e6854c8a6504c4 SHA-256: ba457654d2a27633392968c6880512417210e586c225312a72c579c000dc64ec

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by ML classifiers and ClamAV, which identified it as Win.Trojan.Agent-36166. It contains embedded JavaScript, indicating an attempt to exploit vulnerabilities within the PDF reader to execute arbitrary code. The primary attack vector appears to be the execution of this embedded script.

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` `2baa10d71019194c9f8241c89b1abce33bd8760d0ff98b977cd56cf464cdf301`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75115 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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