Malicious PDF — malware analysis report

Static analysis result for SHA-256 19b4154ce00a2eae…

MALICIOUS

PDF

75.8 KB
MD5: 4f1e4fb6f7c97de1d4860f08dcfa9eee SHA-1: ab73d1b0091a82ecd5cf686ff2bec1fea8668c40 SHA-256: 19b4154ce00a2eaea7daba68817f6cd188dcf8052be21e230d5353f8997f62ce
168 Risk Score

Malware Insights

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

The file is a PDF that leverages the CVE-2010-0188 exploit targeting Adobe Reader's LibTIFF component. Embedded JavaScript within the XFA form is likely responsible for executing the exploit. The benign URLs present do not detract from the malicious nature indicated by the exploit and ML classifier.

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_00000286.bin
e2a6fbc6557808987237a70f66fbbb697ac7a3532d95a8e35d40becc5ba4bb66
pdf-embedded-script PDF raw stream script payload at offset 0x286 76864 bytes