Malicious PDF — malware analysis report

Static analysis result for SHA-256 143a04dabb02cb93…

MALICIOUS

PDF

79.1 KB
MD5: 0d3a4362e201ef180d9dde2a2bf0a3e7 SHA-1: 48ed4e18d7ea5860ef406f6c8b4f24a04f0e449a SHA-256: 143a04dabb02cb93483915d5a18ccb719aa9ee3b2809f2ea370ca214f631c9a1
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The critical heuristic firing for CVE-2010-0188 indicates that this PDF document is designed to exploit a known vulnerability in Adobe Reader. The presence of XFA forms and embedded script payloads further supports this conclusion. The exploit likely leads to the execution of a second-stage payload, although no specific details of that payload were extracted.

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
3c76f5dfb8f6cd545dcd77aab88b3907396608e0ed48293ef85fda0a652338da		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80254 bytes

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