Chong, i do not believe so, the reason is that the "File" type in the CMS is actually just a special Page Type + Page Attachment, and in the database you need the page first created so when it creates an attachment it has something to attach it to.
You have the option of instead using the Media Library and having a file there, there are pros and cons to having a file in the Content Tree vs. in the media library, and one may be better for your applications than the other.
Files in the Media Library are just that, actual physical files on your server with a basic database entry that holds some meta data. Easy to place.
Files on the content tree take extra steps but allow you to have different culture variations, security, and can be indexed in smart search.