/usr/lib/libOpenImageIO_Util.so.1.7 is in libopenimageio1.7 1.7.17~dfsg0-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libOpenImageIO_Util.so.1.7.17
/usr/lib/libOpenImageIO_Util.so.1.7.17