/usr/lib/libreoffice/program/classes/ is in libreoffice-java-common 1:3.5.7-0ubuntu13.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/libreoffice/program/classes/LuceneHelpWrapper.jar
/usr/lib/libreoffice/program/classes/ScriptFramework.jar
/usr/lib/libreoffice/program/classes/ScriptProviderForJava.jar
/usr/lib/libreoffice/program/classes/XMergeBridge.jar
/usr/lib/libreoffice/program/classes/XSLTFilter.jar
/usr/lib/libreoffice/program/classes/XSLTValidate.jar
/usr/lib/libreoffice/program/classes/agenda.jar
/usr/lib/libreoffice/program/classes/commonwizards.jar
/usr/lib/libreoffice/program/classes/fax.jar
/usr/lib/libreoffice/program/classes/form.jar
/usr/lib/libreoffice/program/classes/letter.jar
/usr/lib/libreoffice/program/classes/lucene-analyzers-2.3.jar
/usr/lib/libreoffice/program/classes/lucene-core-2.3.jar
/usr/lib/libreoffice/program/classes/query.jar
/usr/lib/libreoffice/program/classes/report.jar
/usr/lib/libreoffice/program/classes/saxon9.jar
/usr/lib/libreoffice/program/classes/table.jar
/usr/lib/libreoffice/program/classes/unoil.jar
/usr/lib/libreoffice/program/classes/web.jar
/usr/lib/libreoffice/program/classes/xmerge.jar