PDF malware analysis — malicious · dd3a1ea014aca0d4

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: 7b241c3afa5533df1c26b0d221404af3 SHA-1: 5cc0a3a9b29d00d37d2b2cd5f8f449165b25165f SHA-256: dd3a1ea014aca0d43110758c43c2f9af38d82791123aa0a321692af0b7607bac

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious JavaScript

The file is a PDF containing embedded JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections for 'Pdf.Exploit.Agent-20663' and 'Win.Trojan.Agent-36166' strongly suggest malicious intent. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to download and execute a secondary payload, which is a common attack vector for this type of malware.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-20663 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-20663
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` `54d220cb5f0debb4a08159d8eb273751afc316b35e52ee44caca96066a0ec835`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74192 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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