PDF malware analysis — malicious · c073cb5a665b39b9

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: 7535befd3fe57c647b347010967efe39 SHA-1: cd4dd4cbe710129ccbd8f22f72fd99bead1643ef SHA-256: c073cb5a665b39b928548c1904b1a38d5cf875627cfa99af808cefb20e809d72

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, evidenced by 'PDF_JAVASCRIPT' and 'PDF_JS' heuristic firings. The critical ClamAV detection 'Win.Trojan.Agent-36166' strongly suggests this JavaScript is used to download and execute a malicious payload. The file's metadata indicates it was authored using PDF Library, a common vector for PDF-based malware.

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` `9fd570cf4a7fde4fa55cad4162f52c8bf1e2a8a0461d012b836414237152538e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75132 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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