PDF malware analysis — malicious · 0069c5163e72ae03

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: 1c20a630e039f71c84278bb78f045fe3 SHA-1: 36d1b7ffc0dc594dd17abe5489c06e0f4cffdd8a SHA-256: 0069c5163e72ae0304b90505d0681e88d60f3c56593ced775961333e9147df62

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection for 'Pdf.Dropper.Agent-7221603-0' and an extracted artifact detection for 'Win.Trojan.Agent-36166'. The presence of embedded JavaScript, identified by 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics, strongly suggests that the PDF is designed to execute malicious code. The obfuscated JavaScript likely attempts to download and run a secondary payload, a common technique for dropper malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7221603-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7221603-0
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` `89368c7b81ff43ae3413d957a7f2285ad0497061fec75d178dfaf6b873806ea7`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	73951 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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