Malicious PDF — malware analysis report

Static analysis result for SHA-256 78d61da32b0cf2c7…

MALICIOUS

PDF

24.1 KB
MD5: 969759d266be9ea9c54d521931587573 SHA-1: fa160d343ca3644ad0283add3d599b308dbb3ce9 SHA-256: 78d61da32b0cf2c7d959d0767b60e4412b161b6408b283fc633f285e867ad749
162 Risk Score

Malware Insights

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

The file is a PDF that triggers a critical heuristic for CVE-2010-0188, an Adobe Reader exploit targeting XFA forms. This exploit is known to download and execute secondary payloads. The ML classifier and ClamAV also flagged the file as malicious. The embedded URL is likely related to the XFA template, but its reputation is unknown.

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/