Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa247b469f844b11…

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: a950cc2b884101dd949b1f5980c89942 SHA-1: 54deed7d97d3ae90feaad966c60e52b76e84a5cf SHA-256: aa247b469f844b11af63760d360a70f7cfcaf105568b5f1fc53a5772f53ecbb4
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1204.002 Malicious File

The critical ClamAV detection and high ML classifier score indicate malicious intent. The presence of embedded JavaScript, flagged by heuristics, suggests the PDF is designed to exploit a vulnerability and execute code. The embedded JavaScript stream is the primary mechanism for this malicious activity, likely leading to the download and execution of a second-stage payload.

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
32dfd7acf35dcfcb76105355ae665adb087e8d339dafc6f2a3e8a63d8de6bd5e		 pdf-javascript-stream PDF /JS object 24 at offset 0x2617 11365 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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