Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f827528918a155…

MALICIOUS

PDF

14.4 KB
MD5: d07d8056d11b5c3a6a77a924b4ebbb46 SHA-1: 929c5a2960f26897f0b4512b28fbb4cab3f2793d SHA-256: e0f827528918a1552f694d24f66c851a228b6b860801473f56735485a9925656
170 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter

The sample is a PDF file that leverages an XFA form to exploit CVE-2010-0188 in Adobe Reader. The heuristic 'CVE_2010_0188' confirms the exploitation of this specific vulnerability. The 'PDF_XFA_NUMERIC_EVAL_STAGER' heuristic indicates a stager mechanism is present, likely to download and execute a second-stage payload. ClamAV also detected this as 'Js.Exploit.HTML-30', suggesting JavaScript-based exploitation.

Heuristics 6

  • 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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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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