sandisk glide 32g wierd files

i bought any 32g flash drive.i used recuva to try recover any files before writing any data there.

just for curiosity if i can recover find anything… i found like 3 or 5 files with really names like #$3@@&$%@# or nofting similar names.

files where like 50mbit to 500mbit in size.after writing drive  there was unable to find theys files recuva anymore. also recuva showed 1 file was in poor shape and ohters where in excellent state to recover…

does anybody knows why theys files where there first place,it was brand new drive straight from shop and i never write any data on them,then i used recuva.

I would ask the shop owner where he got the drive from.   Maybe it’s used.  Or counterfeit.