Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa7555d96f8c76d…

MALICIOUS

PDF

102.2 KB
MD5: 81fea056829aeb3052fc6c8a3f1ff586 SHA-1: f914ad88d7e11039643bf98630235bb4cb4f7722 SHA-256: 7aa7555d96f8c76d764129909f84ccc270a6430368284c8bc3ec97c0dfbad321
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 ClamAV and an ML classifier. It contains an embedded XFA form and exploits CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component, to execute a payload. The embedded script, although truncated, appears to be JavaScript and likely contributes to the exploitation process.

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
9c2d83a8cb9c0ec8d765431441dee6b29279929548b7b6b668567f3ee56c4bb9
pdf-embedded-script PDF raw stream script payload at offset 0x346 103946 bytes