Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e03fe08ce8346e0…

MALICIOUS

PDF

24.2 KB
MD5: 1e3981be7146ba6c703661db2fafd6d2 SHA-1: 5669520ff8a7c6af442f8fab281ccac8d0a5a903 SHA-256: 6e03fe08ce8346e09e0dd49449c95313daf935ec472c83c2a2d75e16975e53b0
162 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by multiple heuristics, including a critical finding for CVE-2010-0188, which is an exploit targeting Adobe Reader's XFA forms. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, while seemingly benign, is part of the XFA structure and likely related to the exploit's functionality. The exploit's nature suggests it's delivered as an attachment, hence the inclusion of Spearphishing Attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/