PDF malware analysis — malicious · 898754eba7b02024

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: 0bf21e19bcda72ed29e620d28c92d26f SHA-1: 1e7bdf5a167926bfa3883abd948a34feedfabc14 SHA-256: 898754eba7b02024cb107bad3a0c8d01b675a6614e9289b345e1dc475e7831bf

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating an attempt to execute arbitrary code. The presence of JavaScript actions and embedded JS streams strongly suggests the document is designed to exploit vulnerabilities or deliver a payload. The exact behavior of the script could not be fully determined due to its size and 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` `b035045bb34598d8c641db3eb407bb4b0a4c372375d9c92ed8b61bc35a8b7140`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75147 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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