PDF malware analysis — malicious · ba2fd0a742646bc0

MALICIOUS

PDF

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

MD5: b199d9fa3f59ec7f3ac804436c90460f SHA-1: d5041990e3955780ec40304bdcebda0bfa444151 SHA-256: ba2fd0a742646bc01a5010a39dd3af09ee841811bea3b1d92b34c068e74fe3e4

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The file is identified as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript streams within the PDF structure. While the document body is unreadable, the presence of JavaScript actions and streams strongly suggests an attempt to execute malicious code, likely for downloading further stages of an attack. The exact behavior of the script is not fully discernible due to potential obfuscation, but its presence is a critical indicator of malicious intent.

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` `8f64f4c05727dbce9041222f261f4a74f9961c47515ab354db3d70032ac9940e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74828 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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