Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b3f2d56e17de2c9…

MALICIOUS

PDF

143.3 KB Created: 2011-04-19 14:23:41 +08:00 Authoring application: Acrobat PDFMaker 9.0 Word 版 (via Acrobat Distiller 9.0.0 (Windows))
MD5: 52cd6eefd6a5eb77b0e4442f5e0f1e5f SHA-1: 83b442ff1d0ab0cf5a243b23bb1e25105e88e3a9 SHA-256: 0b3f2d56e17de2c96e0b64966e3c672ab93282c8ae5d1c090016c665ce2216e0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains an embedded Adobe Flash RichMedia object that exploits CVE-2010-1297. This exploit is designed to execute arbitrary code, likely by leveraging the embedded JavaScript. The JavaScript stream, when deobfuscated, appears to construct a payload intended for execution, potentially downloading and running a second-stage exploit or malware. The ML classifier strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • Adobe Flash authplay SWF exploit in PDF — CVE-2010-1297 critical CVE likely CVE_2010_1297_FLASH_RICHMEDIA
    PDF combines RichMedia Flash activation, a crafted SWF with ActionScript prototype/AVM-era markers or the AES-PHP/authplay variant markers, and PDF-side shellcode heap-spray staging. This is the static delivery shape associated with CVE-2010-1297 in Adobe Reader's bundled authplay.dll.
  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • 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 file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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/pdf/1.3/
    • 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/pdfx/1.3/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
8.swf
dc93ef64ed318ccd7577bb40b4a4165abbacfac317cb1de691c7402c1209399b		 pdf-embedded-file PDF EmbeddedFile object 37 at offset 0x2103F 2557 bytes
javascript_obj0027_000.js
773a96642c5a1e84d5aff10c41457e0032028bdd894b944dd97864cea8303bc4		 pdf-javascript-stream PDF /JS object 27 at offset 0x20617 3810 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.