The jD Content plugin presently shows the Title of the Download. This Title does not need to be the same as the file name in the Download. So you could rename the Download.
Might be a bit more flexible if you re-named the Download say 'Display Handout 2019-02-15" where I have added the date into the title ,or mabe something like "Display Handout - <topic>" where ,topic> is replaced with a suitable text. This is for when you have multiple handouts.