Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f85a207da6aca0…

MALICIOUS

PDF

101.8 KB
MD5: 62883d73aec6eca16be5e64965ba646f SHA-1: 069c410d86707cfef09063aceb6cbf669686d7c5 SHA-256: 84f85a207da6aca008e7f04b53086ff8f3980603ae843ffaa86f7dad051409eb
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 designed to exploit CVE-2010-0188 in Adobe Reader. This exploit is capable of executing arbitrary code, indicated by the critical heuristic firing for this CVE. The embedded script, although truncated, suggests an attempt to download and execute a second-stage payload.

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
cc842c930b4aab391adc4d99a23bbe001e257a926ce0803485c4ff0f63a5b9f4
pdf-embedded-script PDF raw stream script payload at offset 0x346 103556 bytes