PDF malware analysis — malicious · cbeead8cace0e55b

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: 88240f8fde57ffc9823e8f8bbf7137d9 SHA-1: b8e1037be64f35902d9095a5806b420262d599ce SHA-256: cbeead8cace0e55bdf5e6abda3c11244447418c2e68e20e10632686225b0a838

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating a potential for malicious scripting. The presence of JavaScript actions and embedded JS streams suggests the file is designed to execute code, likely to download and run additional malware. The document body was unreadable, preventing further analysis of its 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` `62b36231a7a0af4a9cc696c565ad89fa78ee1ebba9a079da5bb05f790bc429e2`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75134 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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