PDF malware analysis — malicious · e3c0a9860585bf34

MALICIOUS

PDF

14.3 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)

MD5: 9384034c156f2f97d8baf83b65e07974 SHA-1: 25b4b00ca9ab88f1b39d7741f572dc9e6e7d7869 SHA-256: e3c0a9860585bf342b04418180f041c01038fc0826ad59a32e0c65aff1e82499

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 document is likely a dropper or downloader. The JavaScript's purpose is to fetch and execute a secondary payload from a remote source, which is a common technique for malware distribution.

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` `21750983f389c00e384e3b0f4de4615f308301f7a03574030bd3acc8a94cce17`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74719 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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