/usr/lib/x86_64-linux-gnu/libpam_misc.so is in libpam0g-dev 1.1.8-3.6ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/x86_64-linux-gnu/libpam_misc.so.0
/lib/x86_64-linux-gnu/libpam_misc.so.0