Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d59fb810a83a16…

MALICIOUS

PDF

24.2 KB
MD5: 95462c8357c64c845f9d56fbe356ee71 SHA-1: 5d04d3efc2dc92e3a0262f932fe7b05b6d35b868 SHA-256: a5d59fb810a83a16314c707e7b9ede37c3993c1cac1236b1e6207844fb300fd1
128 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.002 Phishing: Spearphishing Attachment

The sample is a PDF file that contains an XFA form, which is a known vector for exploiting vulnerabilities. Specifically, the critical heuristic firing indicates exploitation of CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF and XFA images. This exploit is designed to allow arbitrary code execution on the victim's machine. The embedded URL, while not directly malicious in this context, is part of the PDF structure.

Heuristics 4

  • 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
  • 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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