Malicious PDF — malware analysis report

Static analysis result for SHA-256 95a33405c6dff76c…

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: 44a18a6f3ec6d4d5801971fb0febf0c0 SHA-1: 2adebfd0d95272ce96b8420e11e29a79d736561f SHA-256: 95a33405c6dff76c1d0d19545960cedeef0df8b47318d0f79e250ea03cca5ddd
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript

The critical ClamAV heuristic identified this PDF as 'Pdf.Exploit.Agent-36776', indicating a known exploit. Low-severity heuristics confirm the presence of embedded JavaScript, which is a common vector for PDF exploits. The JavaScript action and embedded JS stream are likely used to download and execute a second-stage payload. The benign URLs present do not detract from the malicious nature indicated by the exploit detection.

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
ff630c079c72abac9d49858e4605924e6f78cba4e2381f41226deafa8320c799		 pdf-javascript-stream PDF /JS object 24 at offset 0x2617 11448 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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