Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b03c6883f93db53…

MALICIOUS

PDF

16.1 KB
MD5: 716a2f65a276516fc7f9970863c8e800 SHA-1: 3e5f127c96e51641d293690c565e56aa9ce13d2c SHA-256: 5b03c6883f93db536dd756143e7a6c5f8ce12a34ae6ad311bf4f686ff8fb1b7d
168 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript within an XFA form, which is known to be exploited by CVE-2010-0188. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded script, although truncated, appears to be JavaScript, likely responsible for executing the exploit.

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_00000354.bin
6773222c507c85d2438ddfbc4257d196cad408f4ef9b73a262379c339a3fda0a
pdf-embedded-script PDF raw stream script payload at offset 0x354 15752 bytes