get https://www.virustotal.com/api/v3/private/files/upload_url
Special privileges required
Private Scanning endpoints are only available to users with Private Scanning license.
For uploading files smaller than 32MB you can simply use the POST /files endpoint, but for larger files you need to obtain a special upload URL first, and then send the POST request to the upload URL instead of sending it to /private/files. The POST request should have the same format expected by the POST /files endpoint. Each upload URL can be used only once.