Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a38aad2278b19f…

MALICIOUS

PDF

79.4 KB
MD5: df4c25084f7d6696970c9a33d19f884c SHA-1: 2bd9429ec1ae86ec3bcd10b38c189134b578f4fd SHA-256: 88a38aad2278b19f9367a212cb8fc537e400ad4a3b7b8aa5f14713c8223574e8
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 JavaScript, though obfuscated, is designed to execute code. This exploit allows for client-side execution of arbitrary code, which is a critical step in many attack chains.

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
a51f66e71bcbe4c908208c90476b3bf7ed73ce289c463da2155a7c8112435fa1
pdf-embedded-script PDF raw stream script payload at offset 0x288 80596 bytes