/usr/lib/x86_64-linux-gnu/libhdf5.so is in libhdf5-mpich2-dev 1.8.11-5ubuntu7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libhdf5.so.7.0.0
/usr/lib/x86_64-linux-gnu/libhdf5.so.7.0.0