Malicious PDF — malware analysis report

Static analysis result for SHA-256 1624caf2d4858e9b…

MALICIOUS

PDF

16.3 KB
MD5: e4a5e70965f4edebac77b0c7ae3bceb0 SHA-1: 1979839ea29cafbd601ba0131751030490fd06ab SHA-256: 1624caf2d4858e9b7967558e16b62555960e878e4c036541b64bb54d22b780f2
168 Risk Score

Malware Insights

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

The sample is a PDF file that leverages the CVE-2010-0188 vulnerability, specifically targeting Adobe Reader's XFA forms. Embedded JavaScript within the PDF is likely responsible for executing the exploit and downloading a secondary 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
a9dc0c21e5ccdfefd1e3e0251c33a8f0a2d77fe2f8efec77143fd8f05f5570ac
pdf-embedded-script PDF raw stream script payload at offset 0x359 15912 bytes