Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a05d9043d7d571b…

MALICIOUS

PDF

23.9 KB
MD5: 8bd7095719bae1d3444a72c1b28bbe05 SHA-1: 189bc823e9f0230a8f727e3dc85ec0c4871a2b5d SHA-256: 4a05d9043d7d571b1b11503ef255606d7c7b695e3e71c3e8e944a37e81e616b8
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious JavaScript T1204.002 Malicious Link: Malicious File

The sample is a PDF file identified as malicious by ClamAV and exhibits characteristics of an XFA form. Critical heuristics indicate the exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The embedded URL, while not directly indicative of a payload, is part of the XFA structure. The script content, though obfuscated, is part of the XFA form's functionality, likely contributing to the exploit.

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 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/