Malicious PDF — malware analysis report

Static analysis result for SHA-256 02efd777f86183eb…

MALICIOUS

PDF

99.7 KB
MD5: a55369a073932768c7c70f3de2b21300 SHA-1: 1d16ea19be6e2b32b168861fc13d4daf89bb2976 SHA-256: 02efd777f86183ebf0fcc665483421ec9f23ea84f56c60260e113cb893e7b094
116 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This exploit allows for arbitrary code execution, which is often used to download and run additional malicious content. While the document body and embedded scripts were heavily obfuscated and truncated, the critical heuristic firing and the nature of the CVE strongly indicate a malicious intent to compromise the user's system.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
a40748f1ed71a30cf34919ccc88abdbe382a30454888aace9e51076bd73bb12b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101383 bytes

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