PDF malware analysis — malicious · d10db41092eae777

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: c66fe5c04b034c4178de2442bcd5111e SHA-1: dcdad2fe4234730749da19586c67a77f19c639ff SHA-256: d10db41092eae7779f42f420d42813edd18368ecf8342550386741c3be0fcc7a

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 code. The presence of PDF_JAVASCRIPT and PDF_JS heuristics further supports this. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, which is a common technique for malware delivery.

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` `6d99bbb0a74a24a07226cac22b40b5a3d9b61f5e93c82a760c7d7d53d226a159`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74799 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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