Malicious PDF — malware analysis report

Static analysis result for SHA-256 73731afa1bf2d8f7…

MALICIOUS

PDF

16.0 KB
MD5: 75fc597468604a90442880cafb55025e SHA-1: e5a10af8e7531f71768c9d2f30a09da04c6b2e00 SHA-256: 73731afa1bf2d8f7d41e7a57e7b9b4a7c620092dd45944968e8dbd7bbc57443a
168 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2010-0188, indicating exploitation of a vulnerability in Adobe Reader's LibTIFF component. The embedded script, though truncated, appears to be JavaScript, which is used to facilitate the exploit. This suggests the primary goal is to execute arbitrary code, likely for downloading and running a further stage.

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_0000034e.bin
61cb73596f1b8abd1d4bb2bbc5c3cf18dc1ecaa39844557b3d46082b718d493d
pdf-embedded-script PDF raw stream script payload at offset 0x34E 15701 bytes