/usr/share/java/estraierpure.jar is in libestraier-java 1.4.13-12ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/../hyperestraier/lib/estraierpure.jar
/usr/share/java/../hyperestraier/lib/estraierpure.jar