Malicious PDF — malware analysis report

Static analysis result for SHA-256 162d176c12cefe7c…

MALICIOUS

PDF

101.6 KB
MD5: 7f8a971fde206993f3fc8ff2deb407a5 SHA-1: 1fd0398f68c222ac0800ff227a65aff7a0d45e17 SHA-256: 162d176c12cefe7c9975edd4961651b0e36c915f91910a038bc1294391ef6219
168 Risk Score

Malware Insights

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

The file is a PDF that leverages the XFA form functionality to exploit CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF processing. The embedded script, identified as JavaScript, is likely responsible for executing the exploit payload. While the script content is truncated, its presence and the critical heuristic firings strongly indicate malicious intent for client-side exploitation.

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
242e9f01acdca5d79557d20b601f75523332ba9f68e4341ea494ecb2c33e6438
pdf-embedded-script PDF raw stream script payload at offset 0x346 103324 bytes