PDF malware analysis — malicious · 4f713bd7aa2449c8

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: f2f487f7154b81b73e5ac97577b5bc30 SHA-1: 3c855f3b8d3ec37b7fd9f966e57f839c8c8ebdee SHA-256: 4f713bd7aa2449c8c43bbaa12c5a580b9821462758dafafeb58f4d7d9f7d6cfc

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Win.Trojan.Agent-36166'. Additionally, embedded JavaScript was detected, suggesting the file's purpose is to download and execute a malicious payload. The ML classifier also strongly indicated maliciousness. Due to the lack of specific IOCs beyond the ClamAV signature and the obfuscated nature of the embedded script, the family remains unknown.

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` `0340c31b97e64a4ac547f7e67beb0df7d0ea9d9f5fa0329c5b5ee09b1eccf38f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74360 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.