Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccfc520cfe93410…

MALICIOUS

PDF

7.3 KB
MD5: 4c036b2727f7211d734a2beebb1fa01d SHA-1: cfbbdc49ca3700496e5fb43b129b0c35717e5298 SHA-256: 6ccfc520cfe934101b72eb6f53a90c370d8489940fc3aa36cafd195e01627667
168 Risk Score

Malware Insights

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

The PDF sample contains embedded JavaScript that leverages specific CVEs (CVE-2009-4324 and CVE-2008-2992) to achieve code execution. The JavaScript appears to be obfuscated but is designed to exploit these vulnerabilities, indicating a malicious intent to download and execute further stages. No specific malware family could be identified.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 5

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (matched in decompressed stream)
  • 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.
  • 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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0016_000.js
48ea4f2de953815314611ca7b3221c058a5a94666ffd86cb4e478401db5134ef		 pdf-javascript-stream PDF /JS object 16 at offset 0x2FE 4521 bytes

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