If you are using an earlier version of ezpublish you may want to use revision 3.
Keep in mind that this extension uploads the file to the var directory but does not add the file to the database (except as an attribute to the collected information object) so it may not be 100% what you are looking for.
There is an install.txt in the doc directory and a readme.txt (also the todo.txt). Also read the settings files carefully.
Yes, the file is uploaded to a var/storage directory as an information collector which can then be sent as part of the information collection mail. That's the point of the extension. But, it's not going to create a file object or list the file in the ezbinary file table.
If that's not what you want, then it might be easier to hack kernel/classes/datatypes/ezbinaryfile/ezbinaryfiletype.php to add the information collector functionality.