Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b5f9819eff33609…

MALICIOUS

PDF

16.0 KB
MD5: b1e8e98e2837c981b8f119bbc669aada SHA-1: d4c66cd5742ec539e825e36c099ec41a46707c28 SHA-256: 6b5f9819eff33609169bafa6d865fca49e99b669a8c04b6671930f2804644331
168 Risk Score

Malware Insights

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

The file is a PDF that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The embedded script contains obfuscated JavaScript, which 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_00000354.bin
a45e3c6c2d8685bd5d25651f954b892b89701118a4230941930c9d5772ec774e
pdf-embedded-script PDF raw stream script payload at offset 0x354 15691 bytes