Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c09c34cd8c8aa7c…

MALICIOUS

PDF

102.0 KB
MD5: 8266faa7a0c0f6d8f539c7e3da0f33d5 SHA-1: 604ee2bfc04bb2a8cc182eff39c5c24cda844870 SHA-256: 5c09c34cd8c8aa7c6a0ae2d4e607b43d6c328669690cff8e38035e78b1f29943
168 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics, including a critical detection for CVE-2010-0188, which is an Adobe Reader exploit targeting XFA forms. The embedded script, although obfuscated, is likely JavaScript and intended to trigger the exploit, leading to the execution of a secondary payload. The ML classifier and ClamAV also 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
d56e27d64f8e984a1489c863882f419231646c9bf9a0760d04bb991417096d51
pdf-embedded-script PDF raw stream script payload at offset 0x346 103730 bytes