PDF malware analysis — malicious · b63ade5e3925a543

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: a05d4b31f214290add96e603fe2d19e3 SHA-1: 46a5cf67d753e331d9bae6098b9f70b5265f7584 SHA-256: b63ade5e3925a543f88347d68b4eeb08d4497c399b97e9ef707c4746d704e9ce

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript, indicated by heuristic firings for PDF_JAVASCRIPT and PDF_JS. ClamAV detections for 'Pdf.Exploit.Agent-14587' and 'Win.Trojan.Agent-36166' strongly suggest this is a malicious PDF exploiting a vulnerability. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as is common with such exploits.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-14587 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-14587
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` `cda618ca0e06d7d0ee8594cd2041fbbe6982d55fa1c501406205016fde9a5f4e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74329 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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