Malicious PDF — malware analysis report

Static analysis result for SHA-256 18326a4118a03e69…

MALICIOUS

PDF

100.1 KB
MD5: 73291072ab02f5faf14ddf1a9b878b2a SHA-1: b190c842bc92c9833762fdc5604aa14f77a26809 SHA-256: 18326a4118a03e69074d3bee22e079fd04540fa1ed2c53e64ba13b6084a3bfce
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 by an ML classifier. It exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms and LibTIFF image parsing. The exploit likely leads to the execution of arbitrary code, potentially downloading a second-stage payload. No specific family could be identified, but the exploit vector is clear.

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
17cdded507368d573dc960b1eb1f3b02ccacf62311f5e2ca0b552b87c8326dc3		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101724 bytes

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