/usr/lib/ is in libtk-tablematrix-perl 1.23-6.1build4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/perl5/
/usr/lib/x86_64-linux-gnu/perl5/5.26/
/usr/lib/x86_64-linux-gnu/perl5/5.26/Tk/
/usr/lib/x86_64-linux-gnu/perl5/5.26/Tk/TableMatrix/
/usr/lib/x86_64-linux-gnu/perl5/5.26/Tk/TableMatrix/Spreadsheet.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/Tk/TableMatrix/SpreadsheetHideRows.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/Tk/TableMatrix.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/Tk/TableMatrix.pod
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Tk/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Tk/TableMatrix/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Tk/TableMatrix/TableMatrix.so
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Tk/TableMatrix/autosplit.ix