Google Phishing Notification

Not sure if this is the right category to post in, but here goes.

I received an email from Google stating:

We recently discovered that some pages on your site look like a possible phishing attack..

And:

Below are one or more example URLs on your site which may be part of a phishing attack:

http://www.(mywebsite).com/~retry1/iTunes/c68e2faab3a03778bb16b8fe55a4085e/index.php

When I visit the above URL, I do receive a security error page indicating a phishing scam. I don’t know how to remove it.

I have iThemes Security plugin installed and configured, but would like to delete the relevant URL/file.