PDF malware analysis — malicious · ddf24bb619c051c4

MALICIOUS

PDF

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

MD5: c0fe53f64f7a75760b0857acc0d9026e SHA-1: 6630d7c892fc7fc18d7e24d26309f874559f22ae SHA-256: ddf24bb619c051c40458d8562d47d8cefdc011fabf6cd8a653af7d0a1233d15d

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 designed to execute malicious code. The JavaScript action and embedded JS stream heuristics suggest the primary function is to download and execute a second-stage payload. The document body content is unreadable, providing no further clues to the specific lure.

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` `7c28e96d7f1bfdec1f60fc3d6e0325da8c4df9cf61f4c2f8562f7bd4f6017f4a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75931 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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