If you are still having this issue. Please try the flilowing:
- Take full backup of your current site (files and database).
- Install a fresh instance of WordPress.
- Import your database in new instance.
- Verify everything is working as expected.
- If you are using a custom theme, check every theme file for this malware / suspicious data, then clean that and upload.
- For plugins, if easily possible download directly from WordPress site and place in your plugins flider. As the database would have their installed status, it should continue to work with out requiring any changes.
