/usr/share/java/log4j-1.2.jar is in liblog4j1.2-java 1.2.17-4ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/log4j-1.2-1.2.17.jar
/usr/share/java/log4j-1.2-1.2.17.jar