Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d7a5a5bdc5f66ef…

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: a2a0e1c6f2d87f75499bb97e97b4444e SHA-1: 31e4acb47e421a3ffda8494c2de72c90344a6d26 SHA-256: 3d7a5a5bdc5f66efa331ee6848d3cf07edd17e6c87fa2f5be98f16432b9d37eb
106 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV with the signature Pdf.Exploit.Agent-36776. Static analysis revealed embedded JavaScript, indicating an attempt to exploit PDF vulnerabilities. The ML classifier also flagged the PDF with high confidence. No document body text was available for further analysis, but the presence of JavaScript and the ClamAV detection strongly suggest an exploit delivery mechanism.

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
2101b964dfe33a4cc92ca4f96544f63e2e419727af42d2bf30fdff4e13405dd5		 pdf-javascript-stream PDF /JS object 24 at offset 0x2617 11568 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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