Malicious PDF — malware analysis report

Static analysis result for SHA-256 056910cac75e5874…

MALICIOUS

PDF

16.2 KB
MD5: 058b523e113f6d2c676acb664441d8ac SHA-1: 321104a682fe39ca605abd18d412eedcd6ce8179 SHA-256: 056910cac75e5874a0b08ed08bc833b7503442051e56e10007e9c2e9a8207bdc
168 Risk Score

Malware Insights

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

The file is a PDF that leverages the XFA form feature to exploit CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component. An embedded JavaScript payload was extracted, which is heavily obfuscated but likely responsible for executing the exploit. 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
950507473fd77d35392ce416a180f7c272cdf0c5b25034911ea8d12c146a9c57
pdf-embedded-script PDF raw stream script payload at offset 0x359 15901 bytes