Before extracting, look at the "Date Modified" and "Size." If it is very small (under 1MB) but claims to be a video, it is likely a malicious script.
If you believe the file is legitimate but aren't sure what it contains, follow these steps before opening: Download File D (4) vd.zip
The "vd" may stand for "Video Data." Some older video downloader extensions or low-quality converter sites use these generic names for saved content. Before extracting, look at the "Date Modified" and "Size
If you have technical expertise, open the file inside a virtual machine or a tool like Windows Sandbox to prevent it from affecting your main system. If you can share the website URL or
If you can share the website URL or the program that generated it, I can give you a much more specific review of its safety and purpose.