For a close approximation of your URL format, you could look at using a Deeplink to serve the PDF. If you “Use String Argument” in the Deeplink, you can use this as a path. This gets passed as a single string to your deeplink microflow. You will have you write your own logic to translate this to generate the correct PDF, but once done you can pass this to a “Download file” action to return the PDF as a download for the user.