Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b829bf051ad392a…

MALICIOUS

PDF

94.1 KB
MD5: 159caa58c92ef2fb157af3551fca4943 SHA-1: de7748be8fcc8d47b1070f3b10a121be584a4745 SHA-256: 5b829bf051ad392a72df7040e86af50b9db6c9ccdc051e06e59a24f7108596ad
176 Risk Score

Malware Insights

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

The file is a PDF that triggers the CVE-2010-0188 exploit, which is known to allow for arbitrary code execution. The embedded script payload and ML classifier further indicate malicious intent. The exploit is likely used to download and execute a secondary payload, though the specific details of the payload are not available in the provided evidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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_file_obj0008.bin
b514a90b1cc052b26b48f171ea2c88d86e24d559ef18b1fd4b22a262883d17a8		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 95566 bytes

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