PDF malware analysis — malicious · c2c4821d1e168737

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: 8eec50ad864c1dd8c0fba40585d4f621 SHA-1: fc468e1afb3c7c0ef9315040cee4ce6d7c6bdb6a SHA-256: c2c4821d1e168737b599e7f206931e5623496d17ae4a115d1ce26842a3362be6

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 the file's likely purpose is to download and execute a second-stage payload. The heuristics suggest the presence of JavaScript actions and embedded JS streams within the PDF structure.

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` `a9d49fb24c83d3a89352c88cc9ae935561f8a8390ae327840111022e869ca850`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74602 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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