Malicious PDF — malware analysis report

Static analysis result for SHA-256 1501f98bab590e87…

MALICIOUS

PDF

24.2 KB
MD5: 5c37b80d57ffe62b5ba86ea96d5dfeeb SHA-1: dad601b86c413a3f341af8b2c944b97e84f4bee4 SHA-256: 1501f98bab590e87cb42d362b0ee004ad775fe8070a7bc07e3e12f31b1ef2b5d
162 Risk Score

Malware Insights

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

The file is a PDF containing an XFA form, which is known to be a vector for exploiting vulnerabilities. Critical heuristics identified CVE-2010-0188, an exploit targeting Adobe Reader's LibTIFF component via XFA, and ClamAV detected it as Pdf.Exploit.Agent-36821. The embedded URL, while seemingly benign, is part of the XFA structure and could be used in conjunction with the exploit.

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/