Malicious PDF — malware analysis report

Static analysis result for SHA-256 664d678110b0d970…

MALICIOUS

PDF

16.2 KB
MD5: 2c9c9169a6b7624e9f807ab4200e257c SHA-1: 05d5eacb60d2f650661ba72dec87b0bc0b2584f5 SHA-256: 664d678110b0d97027b2410ccd7daf5ca39323bd3715764a2c82a803a0a06369
168 Risk Score

Malware Insights

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

The file is a PDF that contains embedded JavaScript and exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. The embedded script, though truncated, appears to be JavaScript and is likely responsible for downloading and executing a second-stage 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_00000359.bin
bb4704d34362335cd2262d5038f39ae0315db668b64cfdf5bb3b12f3f542995f
pdf-embedded-script PDF raw stream script payload at offset 0x359 15885 bytes