reversiblean on "[Plugin: Wordfence Security] File contains suspected malware URL: wp-content/backups/*-backup.sql"

Filename: wp-content/backups/reversiblean-backup.sql.6dd70a2dae02bac17cee360bcd2df581923d26bb-wpb2d-secret
Bad URL: http://soaksoak.ru/
File type: Not a core, theme or plugin file.
Issue first detected: 18 secs ago.
Severity: Critical
Status New

I think the file is related to WordPress Backup to Dropbox plugin.

I'm wondering if further tests may be needed to determine if my site is compromised or not. May I just delete that file?

My site: http://www.reversiblean.com

Any advise is highly appreciated.

https://wordpress.org/plugins/wordfence/