/usr/lib/x86_64-linux-gnu/libibdmcom.so is in libibdm-dev 1.5.7-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libibdmcom.so.1.1.1
/usr/lib/x86_64-linux-gnu/libibdmcom.so.1.1.1