Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e632d090e0db4e…

MALICIOUS

PDF

14.3 KB
MD5: 3e322ef4beec4e901de529d1997916dd SHA-1: 3249f05579223955aeb6abb3e720eec1fc3c6410 SHA-256: 87e632d090e0db4eee8057a51b4b06bbddd7c2ec17efa11a78636ea0c64926d2
170 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains XFA form content that triggers the CVE-2010-0188 exploit, as indicated by multiple critical heuristic firings. The ClamAV detection of 'Js.Exploit.HTML-30' further supports the malicious nature. The embedded URL is likely related to the exploit delivery or staging. No scripts were extracted from this sample, but the exploit itself is sufficient to indicate malicious intent.

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/