Malicious PDF — malware analysis report

Static analysis result for SHA-256 798df82c7d1cf67f…

MALICIOUS

PDF

93.9 KB
MD5: 42268a914c9fc3967d43515c6becde0a SHA-1: c357634dba7df6412b87949e8f889d6e554b5be1 SHA-256: 798df82c7d1cf67fefbe83952557542d1d44159e8938c785c7f6a17106261439
176 Risk Score

Malware Insights

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

The PDF file contains an embedded XFA form and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader. The embedded script payload and ML classifier further indicate malicious intent. The exploit is likely used to download and execute a secondary payload, although the specific payload and its destination are not discernible from 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
5f3cbdee9386674c7a17d995e17f19ad4542b8a5d9c1d12f75e48435d318d26c		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 95392 bytes

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