Malicious PDF — malware analysis report

Static analysis result for SHA-256 65930d68a6afcab0…

MALICIOUS

PDF

100.0 KB
MD5: 8b9fd21776daa8375409a84b9f0633d7 SHA-1: 322f4c8563b867cadf56ef998bd1c2adfab80d68 SHA-256: 65930d68a6afcab06d0b846fe39a27e478b8b51b52465ed22c8df500a83bb90f
116 Risk Score

Malware Insights

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

This PDF file is flagged as malicious by an ML classifier and contains a critical heuristic indicating exploitation of CVE-2010-0188, a known Adobe Reader vulnerability. The XFA form structure suggests the exploit is delivered via embedded JavaScript. The primary goal appears to be executing arbitrary code, likely to download and run a secondary payload, though no specific URLs for this are present in the provided evidence.

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
5e4f4386d63f8f401f3dc75b87eab95aeac2896045fc2ea0db592a31bd2e6f3d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101629 bytes

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