There are a bunch of options for deleting files with non-ascii filenames.
I was able to create and delete a file with the filename under discussion by using ANSI C quoting:
# Create the offending file
touch $'\x3f\x3f\x5b\x3f\x3f\x02\x3f\x3f\xd8\xa9\x3f\x58\x0a'
# Verify that the file was created
ls -lib
# Remove the offending file
rm $'\x3f\x3f\x5b\x3f\x3f\x02\x3f\x3f\xd8\xa9\x3f\x58\x0a'
Take a look at this post:
Here's a command taken from that post that willshould delete all files in the current directory whose names contain non-ascii characters:
LC_ALL=C find . -maxdepth 0 -name '*[! -~]*' -delete
You can modify the glob pattern or use a regular expression in order to narrow down the matches.
Here's another relevant post:
There's a suggestion there to try deleting by inode. First run ls -lib to find the inode of the offending file, and then run the following command to delete it:
find . -maxdepth 1 -inum ${INODE_NUM} -delete
You might also find the following article to be generally useful:
I was able to seemingly reproduce your issue and resolve it in this manner.
I was also able to delete the file by using ANSI C quoting, as in the following example:
# Create the offending file
touch $'\x3f\x3f\x5b\x3f\x3f\x02\x3f\x3f\xd8\xa9\x3f\x58\x0a'
# Verify that the file was created
ls -lib
# Remove the offending file
rm $'\x3f\x3f\x5b\x3f\x3f\x02\x3f\x3f\xd8\xa9\x3f\x58\x0a'