Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a80b51f9f7d170a…

MALICIOUS

PDF

24.1 KB
MD5: f1b542d394aa5b78a9e308b58246470e SHA-1: 45326f5b2cf4cf467f8259102261ea0a0c06c356 SHA-256: 4a80b51f9f7d170aca1db4bdd60390ab1a99684a18ccfe0ecc78c92aeae4dda5
130 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF file identified as malicious by ClamAV, specifically detecting it as Pdf.Exploit.Agent-36821. Static analysis indicates the presence of an XFA form and a critical finding for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. This suggests the PDF is designed to exploit this vulnerability for initial code execution. The embedded URL, though malformed, points to an XFA schema, further supporting the exploit vector. The document body contains obfuscated JavaScript-like code that appears to be part of the exploit mechanism, likely intended to download and execute a second-stage payload.

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/