/usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0 is in libapt-pkg5.0 1.4.9.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0.1
/usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0.1