/usr/share/omf/epiphany/ is in epiphany-browser-data 3.4.0.1-2ubuntu1.
This file is owned by root:root, with mode 0o755.
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/usr/share/omf/epiphany/epiphany-C.omf
/usr/share/omf/epiphany/epiphany-bg.omf
/usr/share/omf/epiphany/epiphany-ca.omf
/usr/share/omf/epiphany/epiphany-cs.omf
/usr/share/omf/epiphany/epiphany-de.omf
/usr/share/omf/epiphany/epiphany-el.omf
/usr/share/omf/epiphany/epiphany-en_GB.omf
/usr/share/omf/epiphany/epiphany-es.omf
/usr/share/omf/epiphany/epiphany-eu.omf
/usr/share/omf/epiphany/epiphany-fi.omf
/usr/share/omf/epiphany/epiphany-fr.omf
/usr/share/omf/epiphany/epiphany-gl.omf
/usr/share/omf/epiphany/epiphany-it.omf
/usr/share/omf/epiphany/epiphany-ja.omf
/usr/share/omf/epiphany/epiphany-nl.omf
/usr/share/omf/epiphany/epiphany-oc.omf
/usr/share/omf/epiphany/epiphany-ru.omf
/usr/share/omf/epiphany/epiphany-sl.omf
/usr/share/omf/epiphany/epiphany-sv.omf
/usr/share/omf/epiphany/epiphany-te.omf
/usr/share/omf/epiphany/epiphany-uk.omf
/usr/share/omf/epiphany/epiphany-zh_CN.omf