Hi Jared
Are you uploading via the Smart Publishing Wizard?
I'm guessing that you are. You may not know it as the SPW,
and instead just see a "Publish" button at the end of the
generation. The point being that I believe this file is one created
during the process of publishing. When you publish, (depending on
settings) a list is maintained of all the files involved. That way
if only one or two change, you only publish the changed files and
not the entire project. This can save time.
Hopefully this was helpful... Rick