/usr/lib/x86_64-linux-gnu/ is in libtk-tablematrix-perl 1.23-6.1+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Tk/TableMatrix/
/usr/lib/x86_64-linux-gnu/perl5/
/usr/lib/x86_64-linux-gnu/perl5/5.20/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Tk/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Tk/TableMatrix/TableMatrix.so
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Tk/TableMatrix/autosplit.ix
/usr/lib/x86_64-linux-gnu/perl5/5.20/Tk/
/usr/lib/x86_64-linux-gnu/perl5/5.20/Tk/TableMatrix.pm
/usr/lib/x86_64-linux-gnu/perl5/5.20/Tk/TableMatrix.pod
/usr/lib/x86_64-linux-gnu/perl5/5.20/Tk/TableMatrix/
/usr/lib/x86_64-linux-gnu/perl5/5.20/Tk/TableMatrix/Spreadsheet.pm
/usr/lib/x86_64-linux-gnu/perl5/5.20/Tk/TableMatrix/SpreadsheetHideRows.pm