Malicious PDF — malware analysis report

Static analysis result for SHA-256 10deac035d8b736d…

MALICIOUS

PDF

6.1 KB
MD5: 9337b2c3864ab9512dcb1c5e64c729bd SHA-1: a2833b7904748e5bb73fa1fc27886d522287ae58 SHA-256: 10deac035d8b736d33ff4bbdefde86b11bf4629f75dafb3928361a4c5d129e07
108 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2008-2992, indicating exploitation of a client execution vulnerability. The embedded JavaScript stream is the primary artifact of interest, likely serving as a loader for a secondary payload. No specific family could be identified.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9761

Heuristics 4

  • util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992
    PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (matched in decompressed stream)
  • 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. (matched inside decoded stream)
  • 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. (matched inside decoded stream)
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00000451.js
435d800c67791f859dc4981de726afdeb9b68c0dbcccdb25ad6129daf9676f45		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x451 561 bytes

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