Malicious PDF — malware analysis report

Static analysis result for SHA-256 77c45c693e3719c5…

MALICIOUS

PDF

12.8 KB
MD5: 2fa873acfa99f4ef9f9663cf703d0545 SHA-1: 9f793e34ea778703de23ec678aab4df1f6e2d9d0 SHA-256: 77c45c693e3719c5af5f9f9dd307f8d6239845eef4c3675aea886980cda2a4c2
168 Risk Score

Malware Insights

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

The file is a PDF that contains embedded JavaScript, which is used to exploit the CVE-2010-0188 vulnerability in Adobe Reader. The script's intent is to download and execute a secondary payload from a remote location, as indicated by the embedded script and the ML classifier's high confidence. The benign URL listed is likely a red herring or unrelated to the malicious functionality.

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_00000384.bin
c9642dab0a177ee936e2a71088ad374de34f0bdf64df3e841bdc23005ddbc8af
pdf-embedded-script PDF raw stream script payload at offset 0x384 12324 bytes