Malicious PDF — malware analysis report

Static analysis result for SHA-256 658a49465b3d4399…

MALICIOUS

PDF

16.3 KB
MD5: d5b64ed3c75417cc2dd2d900ea1d9760 SHA-1: 1c89309d87bce8ba3819add571d3cf12e58ce5e4 SHA-256: 658a49465b3d43990be70fbbe5beca4f8a0d99edc550552e454cb3e7ac953122
168 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded XFA content which triggers the CVE-2010-0188 exploit, a known vulnerability in Adobe Reader. The embedded script, identified as JavaScript, is likely responsible for executing the exploit payload. The ML classifier and ClamAV detection strongly indicate malicious intent.

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-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000359.bin
aeeeb2b67fd046d45bdfd641219a002b2937aba57e9fb877b465437fcc5604a6
pdf-embedded-script PDF raw stream script payload at offset 0x359 15917 bytes