There appears to be abuse of the MOD coming from China, see my hosting company's response:
When investigating, it would appear that the emails were as follows:
Database error in vBulletin 2.0.42:
Invalid SQL:
SELECT *
FROM dbtech_dbseo_resolvedurl
WHERE seourl = 'ivf/ivf-clinics/'
LIMIT 1;
MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Friday, August 2nd 2019 @ 01:58:25 PM
Error Date : Friday, August 2nd 2019 @ 01:58:25 PM
Script :
http://www.myfertilityforum.com/ivf/ivf-clinics/?
Referrer :
https://www.google.com
IP Address : 116.2.72.87
Username : N/A
Classname : vBulletinDatabase_MySQLi
MySQL Version :
Server : 85.92.85.119
User Agent :
The IP address that accessed the script (/home/myfertilityforum/public_html/dbseo.php) is associated with China.
I believe that this may be some sort of attempt to exfiltrate data from your site.
To prevent any further attempts, I have zeroed the permissions on the file.
I would strongly suggest consulting your developer before resetting the permissions on this.