Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b4ff78f0c6606a6…

MALICIOUS

PDF

79.7 KB
MD5: 8c2c6a0a519c1348a72239278a24ae3b SHA-1: ba37829bf0cec21f6abcdd5480992654cfb48578 SHA-256: 6b4ff78f0c6606a6dff2030c8f6cd790433fff5c24c1e803ead6bb7791c855f1
168 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image handling. The embedded JavaScript attempts to deobfuscate and execute a payload. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to download and execute a second-stage 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000288.bin
b3735c83c928bdcf8b9631bbc78fda51674aa492a70835562f9a410d89f89087
pdf-embedded-script PDF raw stream script payload at offset 0x288 80921 bytes