Malicious PDF — malware analysis report

Static analysis result for SHA-256 139e0ea873d828b5…

MALICIOUS

PDF

102.4 KB
MD5: a27db5d7f46f12d028e1becaa9d998c0 SHA-1: a956eae4891ef072ac2182975d5aca68d10af3c0 SHA-256: 139e0ea873d828b5d928fcec301f6aa021be197082e6ae06984e701375f7ca01
168 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF and XFA forms. The embedded script, which appears to be 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_00000346.bin
a11bc5af14bdf715238aad23c35bfd04d307050b1eec9251c7609a3365e4ba26
pdf-embedded-script PDF raw stream script payload at offset 0x346 104137 bytes