/usr/share/perl5/Bio/Matrix/ is in libbio-perl-perl 1.7.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Bio/Matrix/Generic.pm
/usr/share/perl5/Bio/Matrix/IO/
/usr/share/perl5/Bio/Matrix/IO.pm
/usr/share/perl5/Bio/Matrix/IO/mlagan.pm
/usr/share/perl5/Bio/Matrix/IO/phylip.pm
/usr/share/perl5/Bio/Matrix/IO/scoring.pm
/usr/share/perl5/Bio/Matrix/MatrixI.pm
/usr/share/perl5/Bio/Matrix/Mlagan.pm
/usr/share/perl5/Bio/Matrix/PSM/
/usr/share/perl5/Bio/Matrix/PSM/IO/
/usr/share/perl5/Bio/Matrix/PSM/IO.pm
/usr/share/perl5/Bio/Matrix/PSM/IO/mast.pm
/usr/share/perl5/Bio/Matrix/PSM/IO/masta.pm
/usr/share/perl5/Bio/Matrix/PSM/IO/meme.pm
/usr/share/perl5/Bio/Matrix/PSM/IO/psiblast.pm
/usr/share/perl5/Bio/Matrix/PSM/IO/transfac.pm
/usr/share/perl5/Bio/Matrix/PSM/InstanceSite.pm
/usr/share/perl5/Bio/Matrix/PSM/InstanceSiteI.pm
/usr/share/perl5/Bio/Matrix/PSM/ProtMatrix.pm
/usr/share/perl5/Bio/Matrix/PSM/ProtPsm.pm
/usr/share/perl5/Bio/Matrix/PSM/Psm.pm
/usr/share/perl5/Bio/Matrix/PSM/PsmHeader.pm
/usr/share/perl5/Bio/Matrix/PSM/PsmHeaderI.pm
/usr/share/perl5/Bio/Matrix/PSM/PsmI.pm
/usr/share/perl5/Bio/Matrix/PSM/SiteMatrix.pm
/usr/share/perl5/Bio/Matrix/PSM/SiteMatrixI.pm
/usr/share/perl5/Bio/Matrix/PhylipDist.pm
/usr/share/perl5/Bio/Matrix/Scoring.pm