PDF malware analysis — malicious · b09497cf93de0bfd

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: 5f1f41b12be6a6d15ee5172f0003d545 SHA-1: ee8a520b4fc04676ad43bf6dfce15516d7de655d SHA-256: b09497cf93de0bfdc177755c423934143eacc4e511fe59d0b890dd7d384c395b

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV heuristic firings indicate the file is recognized as Win.Trojan.Agent-36166. Additionally, low-severity heuristics detected embedded JavaScript actions and streams within the PDF structure. The presence of JavaScript suggests an attempt to execute malicious code, likely to download and run a secondary payload or exploit a vulnerability.

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` `0b96e3ac81efc932fc576295bad4fd1411ee8791174070750cc35b693fc35939`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74574 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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