Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f3927bc6c8f899…

MALICIOUS

PDF

24.2 KB
MD5: 6648eaa7d13404067203712a3a7e9f0a SHA-1: dc37b17076036d6e27b786b1ba39b53b878bec61 SHA-256: c8f3927bc6c8f899292cfffa7685abf30b947da7586682cded5705a69b5a979a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.001 Phishing: Spearphishing Attachment

The sample is a PDF document identified as malicious by ClamAV. Static analysis detected the use of an XFA form and a critical vulnerability, CVE-2010-0188, which is known to be exploited in Adobe Reader. The XFA payload was decoded from a raw stream, indicating an exploit designed for client-side execution. The embedded URL, while obfuscated, points to an XFA schema, further supporting the exploit vector.

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/