/usr/lib/x86_64-linux-gnu/libqmf2.so is in libqmf2-dev 0.16-9ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libqmf2.so.1.0.0
/usr/lib/x86_64-linux-gnu/libqmf2.so.1.0.0