Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f0db16520073a83…

MALICIOUS

PDF

79.6 KB
MD5: 162b7b6e51bd67204f0f935c1999bfc6 SHA-1: 13357b79d3258a72880e274dfba3f6249bd7f7e8 SHA-256: 5f0db16520073a83f9365447735c5982ddf9e40275fcda40a5dba9d63b78ccf4
168 Risk Score

Malware Insights

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

The PDF file contains embedded XFA (XML Forms Architecture) content which is known to be a vector for exploits. Heuristics indicate a critical vulnerability, CVE-2010-0188, related to LibTIFF and XFA exploitation. The embedded script, although obfuscated, is likely responsible for downloading and executing a second-stage payload, leveraging JavaScript within the XFA environment. The benign URLs present do not detract from the malicious nature indicated by the exploit and script.

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_00000288.bin
0683a12b90e13ca035ff4478ccb4a0e7528500b9f0d5e4382c604cbcae734c8b		 pdf-embedded-script PDF raw stream script payload at offset 0x288 80832 bytes

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