Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f14d6d23da56b1b…

MALICIOUS

PDF

24.2 KB
MD5: 31174befe1ab028b8cbace024fe03d79 SHA-1: 92cece3adbd72de0bd687b300054cea268bbe1bd SHA-256: 6f14d6d23da56b1b3b8f4dce6e8f4034a1e07c74d6ad8b4fa1cdf0572970b234
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, an Adobe Reader exploit targeting XFA forms. The ML classifier also strongly flagged it. The embedded URL, while not directly malicious, is related to XFA schema, further supporting the exploit vector. The document body contains obfuscated JavaScript-like code that likely contributes to the exploit execution, though its exact function is unclear due to obfuscation.

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/