Malicious PDF — malware analysis report

Static analysis result for SHA-256 c28996e5e2083ee9…

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: b414f082820df3176002087d570a8561 SHA-1: 0be123909080194920861b54f1d368e28888b2a6 SHA-256: c28996e5e2083ee99e4f7d62d881497e2a8482db5f5cd66f5b1331269b08ec11
106 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, flagged by multiple heuristics and detected by ClamAV as Pdf.Exploit.Agent-36776. This indicates the file is designed to exploit a vulnerability within PDF viewers to execute malicious code. The ML classifier strongly supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
091a966c00355dbf3177eed153aae4769df6ef1a83bf5699cf2c3396ec581b18		 pdf-javascript-stream PDF /JS object 24 at offset 0x2617 11474 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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