Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7b8474925bbfa04…

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: 9413526eb2c39a8e8c6a48afde64fb0c SHA-1: 48c149e6d6d70046cbba2df273b9b045c687bed2 SHA-256: b7b8474925bbfa0430fb970ead33f95e823e8ae4f553fe4fb4a542aebfd4dfb1
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The critical ClamAV heuristic identified this PDF as Pdf.Exploit.Agent-36776, indicating a known exploit. Low-level heuristics confirm the presence of embedded JavaScript, which is commonly used in PDF exploits to download and execute further stages. No document body text was available for analysis, but the presence of JavaScript and the ClamAV detection strongly suggest a malicious exploit delivery.

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
866666544fdea6b5c16aed114e4d8cf6ca546615f7afe04166e99b3404d38d07		 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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