Malicious PDF — malware analysis report

Static analysis result for SHA-256 5474844d239c08a2…

MALICIOUS

PDF

14.3 KB
MD5: 42d5716d30badcb04f367e07a0db1939 SHA-1: ee6ba59206264628baa636d76a4c1948bd72cdc0 SHA-256: 5474844d239c08a26b35c122904c581ef9eb630a60e6bbf86ca8ad56b17076d7
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1559.001 Component Object Model Hijacking

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting Adobe Reader's XFA forms. The heuristic firings indicate the presence of an XFA numeric stager, which is designed to evaluate and execute code. This exploit likely serves as a dropper for a secondary payload, as suggested by the ClamAV detection name 'Pdf.Exploit.Dropped-78'.

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.
  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • XFA numeric character-table eval stager high PDF_XFA_NUMERIC_EVAL_STAGER
    PDF XFA initialize script reads numeric form data from rawValue, maps the values through a short character table, and evals the reconstructed stage. This is an exploit-kit staging technique even when the final decoded layer remains encoded.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://www.xfa.org/schema/xfa-template/2.5/

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