Malicious PDF — malware analysis report

Static analysis result for SHA-256 662a6abe29a6ff7e…

MALICIOUS

PDF

24.2 KB
MD5: 40a61b3834ec9271b0195ce78576bedc SHA-1: b216685a0f79211c3184f49856530c0325c49cbe SHA-256: 662a6abe29a6ff7eb2b551e245876e3e1ce48b10b7b6c6cd6902c1a65f302343
162 Risk Score

Malware Insights

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

The sample is identified as malicious by multiple heuristics, including a critical finding for CVE-2010-0188, which targets XFA forms in Adobe Reader. The ML classifier also strongly indicates maliciousness. The embedded URL, while not directly executable, is associated with XFA templates, reinforcing the exploit vector. The attack pattern involves exploiting a client-side vulnerability to achieve code execution, likely delivered as a spearphishing attachment.

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/