Malicious PDF — malware analysis report

Static analysis result for SHA-256 154cf72722597c86…

MALICIOUS

PDF

24.1 KB
MD5: f645237cad46ad589b921d5dcb6dfa28 SHA-1: be3a575bcd50c15add3d41ba15a86cd6c048dc75 SHA-256: 154cf72722597c86547476d99b9502d8541398ddbec109661f6e396c3121d871
162 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by multiple heuristics, including ClamAV and an ML classifier. It specifically targets CVE-2010-0188, an exploit for Adobe Reader related to XFA forms. The embedded URL, while seemingly benign, is part of the XFA structure and likely used in conjunction with the exploit. The exploit's purpose is to achieve arbitrary code execution on the victim's machine.

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/