PDF / .PHP malware analysis — malicious · 64c89a80b2623442

MALICIOUS

PDF / .PHP

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

MD5: 0517f195bc47d5548b23dbf2639f5ec8 SHA-1: cf0d83256f0f706d46beb8307218a45f99cfddd4 SHA-256: 64c89a80b2623442c5cdbe6236b18c06ecb4d0437426b6a5438d4cbea5cae5d3

166 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, which identified it as Win.Trojan.Agent-36166. The embedded JavaScript, although heavily obfuscated, is indicative of an exploit attempting to download and execute a second-stage payload. The primary IOC is the ClamAV detection name.

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` `f25cb74f8a11692301d30da6d33a9a4d33da449f337a448f05ec59c209b70eb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74967 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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