Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b7b32be561886c…

MALICIOUS

PDF

99.8 KB
MD5: fbaf08434b86ba08e37a5ac6a5bfacfc SHA-1: 63c6cf04073ae28c95ccb486216dfefbaa8ba6f5 SHA-256: 03b7b32be561886c7d0eecf9ee42e6095bd59a63554b000548d0e4840a8ef693
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious, with critical heuristics indicating exploitation of CVE-2010-0188 via XFA forms. This exploit is known to facilitate arbitrary code execution. While no specific script was directly extracted or deobfuscated, the presence of an embedded script payload and the nature of the CVE suggest the PDF is designed to download and execute a secondary malicious payload.

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
090f0fff76594d195974430b76f6cedd3ae89135117d8aa2e8002f39b581a6e1		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101463 bytes

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