/usr/lib/purple-2/libymsg.so is in libpurple0 1:2.10.9-0ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/purple-2/libymsg.so.0.0.0
/usr/lib/purple-2/libymsg.so.0.0.0