/usr/share/roundcube/plugins/markasjunk/ is in roundcube-plugins 0.9.5-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/roundcube/plugins/markasjunk/localization/
/usr/share/roundcube/plugins/markasjunk/localization/az_AZ.inc
/usr/share/roundcube/plugins/markasjunk/localization/be_BE.inc
/usr/share/roundcube/plugins/markasjunk/localization/ber.inc
/usr/share/roundcube/plugins/markasjunk/localization/br.inc
/usr/share/roundcube/plugins/markasjunk/localization/bs_BA.inc
/usr/share/roundcube/plugins/markasjunk/localization/ca_ES.inc
/usr/share/roundcube/plugins/markasjunk/localization/cs_CZ.inc
/usr/share/roundcube/plugins/markasjunk/localization/cy_GB.inc
/usr/share/roundcube/plugins/markasjunk/localization/da_DK.inc
/usr/share/roundcube/plugins/markasjunk/localization/de_CH.inc
/usr/share/roundcube/plugins/markasjunk/localization/de_DE.inc
/usr/share/roundcube/plugins/markasjunk/localization/el_GR.inc
/usr/share/roundcube/plugins/markasjunk/localization/en_GB.inc
/usr/share/roundcube/plugins/markasjunk/localization/en_US.inc
/usr/share/roundcube/plugins/markasjunk/localization/eo.inc
/usr/share/roundcube/plugins/markasjunk/localization/es_AR.inc
/usr/share/roundcube/plugins/markasjunk/localization/es_ES.inc
/usr/share/roundcube/plugins/markasjunk/localization/et_EE.inc
/usr/share/roundcube/plugins/markasjunk/localization/fa_IR.inc
/usr/share/roundcube/plugins/markasjunk/localization/fi_FI.inc
/usr/share/roundcube/plugins/markasjunk/localization/fr_FR.inc
/usr/share/roundcube/plugins/markasjunk/localization/gl_ES.inc
/usr/share/roundcube/plugins/markasjunk/localization/he_IL.inc
/usr/share/roundcube/plugins/markasjunk/localization/hr_HR.inc
/usr/share/roundcube/plugins/markasjunk/localization/hu_HU.inc
/usr/share/roundcube/plugins/markasjunk/localization/hy_AM.inc
/usr/share/roundcube/plugins/markasjunk/localization/id_ID.inc
/usr/share/roundcube/plugins/markasjunk/localization/it_IT.inc
/usr/share/roundcube/plugins/markasjunk/localization/ja_JP.inc
/usr/share/roundcube/plugins/markasjunk/localization/km_KH.inc
/usr/share/roundcube/plugins/markasjunk/localization/ko_KR.inc
/usr/share/roundcube/plugins/markasjunk/localization/ku.inc
/usr/share/roundcube/plugins/markasjunk/localization/lt_LT.inc
/usr/share/roundcube/plugins/markasjunk/localization/lv_LV.inc
/usr/share/roundcube/plugins/markasjunk/localization/ml_IN.inc
/usr/share/roundcube/plugins/markasjunk/localization/mr_IN.inc
/usr/share/roundcube/plugins/markasjunk/localization/nb_NO.inc
/usr/share/roundcube/plugins/markasjunk/localization/nl_NL.inc
/usr/share/roundcube/plugins/markasjunk/localization/nn_NO.inc
/usr/share/roundcube/plugins/markasjunk/localization/pl_PL.inc
/usr/share/roundcube/plugins/markasjunk/localization/pt_BR.inc
/usr/share/roundcube/plugins/markasjunk/localization/pt_PT.inc
/usr/share/roundcube/plugins/markasjunk/localization/ro_RO.inc
/usr/share/roundcube/plugins/markasjunk/localization/ru_RU.inc
/usr/share/roundcube/plugins/markasjunk/localization/si_LK.inc
/usr/share/roundcube/plugins/markasjunk/localization/sk_SK.inc
/usr/share/roundcube/plugins/markasjunk/localization/sl_SI.inc
/usr/share/roundcube/plugins/markasjunk/localization/sr_CS.inc
/usr/share/roundcube/plugins/markasjunk/localization/sv_SE.inc
/usr/share/roundcube/plugins/markasjunk/localization/tr_TR.inc
/usr/share/roundcube/plugins/markasjunk/localization/uk_UA.inc
/usr/share/roundcube/plugins/markasjunk/localization/vi_VN.inc
/usr/share/roundcube/plugins/markasjunk/localization/zh_CN.inc
/usr/share/roundcube/plugins/markasjunk/localization/zh_TW.inc
/usr/share/roundcube/plugins/markasjunk/markasjunk.js
/usr/share/roundcube/plugins/markasjunk/markasjunk.php
/usr/share/roundcube/plugins/markasjunk/package.xml
/usr/share/roundcube/plugins/markasjunk/skins/
/usr/share/roundcube/plugins/markasjunk/skins/classic/
/usr/share/roundcube/plugins/markasjunk/skins/classic/junk_act.png
/usr/share/roundcube/plugins/markasjunk/skins/classic/junk_pas.png
/usr/share/roundcube/plugins/markasjunk/skins/classic/markasjunk.css
/usr/share/roundcube/plugins/markasjunk/tests/
/usr/share/roundcube/plugins/markasjunk/tests/Markasjunk.php