Malicious PDF — malware analysis report

Static analysis result for SHA-256 dac4aaefec4c1c14…

MALICIOUS

PDF

13.1 KB Created: 2011-11-02 19:21:39 +04:00 Authoring application: Adobe Acrobat 10.0 (via Acrobat Web Capture 10.0)
MD5: 631aa1a400a00db5b6601bc22074b1b9 SHA-1: ebe6e1abd7848e1df15460f3dc3d45b713d7ecf6 SHA-256: dac4aaefec4c1c14176f5b0ee6e9e9c9a9945b414447be6b5c85eed8f8387e45
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV heuristic indicates this PDF is recognized as a known exploit, specifically 'Pdf.Exploit.Agent-36776'. The presence of embedded JavaScript, flagged by PDF_JAVASCRIPT and PDF_JS heuristics, strongly suggests that the exploit leverages this script to perform malicious actions. While the exact payload is not detailed, the combination points to a typical PDF exploit delivery mechanism.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36776 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36776
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0024_000.js
f9235b1249e54063343bddbe2e49de4fb0d125e7c7c70b05fcb2b519d234e6fc		 pdf-javascript-stream PDF /JS object 24 at offset 0x2617 11388 bytes
icc_00_off000018a6.icc
653b586c4707574ffcd648ba35494daed2c76ceafcf4c07d315ed961b1dc347f		 pdf-icc-profile PDF ICC profile at offset 0x18A6 408 bytes
icc_01_off00001a00.icc
2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e		 pdf-icc-profile PDF ICC profile at offset 0x1A00 3144 bytes

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