Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad168bd99ede7b9d…

MALICIOUS

PDF

23.9 KB
MD5: 8fc6863988343c85a06ceabcd4d3b9b1 SHA-1: cdb44452f17fe32f5c715c2ff1ec29f2824af3d9 SHA-256: ad168bd99ede7b9d2a8105937c26ed5c582190389424ef8ba6a3c1e45ba997d7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by ClamAV, specifically detecting it as 'Pdf.Exploit.Agent-36821'. Static analysis indicates the presence of an XFA form and a critical finding for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. This suggests the PDF is designed to exploit this vulnerability upon opening in a vulnerable version of Adobe Reader, likely leading to the execution of a secondary payload. An embedded URL was also found, though its reputation is unknown.

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.Agent-36821 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36821
  • 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/