Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c8ac66167088817…

MALICIOUS

PDF

24.2 KB
MD5: 0a17f8e3dc124172b8d916ac7b8f0216 SHA-1: 3fc909a7cbb9b485283657a67a39cf469436930e SHA-256: 5c8ac66167088817d13fec8f2b920f8fbdaf6e2a3771a75a160e4c3af04756b6
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 and an ML classifier. It specifically targets CVE-2010-0188, an exploit in Adobe Reader's handling of XFA forms and LibTIFF, indicating an attempt to execute arbitrary code upon opening. The embedded URL, while not directly malicious in reputation, is part of the XFA template structure.

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/

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