PayPal Website Payment Pro triggers Kaspersky phishing

I've seen just a couple posts about this dating back over the years, but never a definitive solution to it. I'm posting fresh in hopes that someone has solved it, or knows of an extension that resolves it.

I'm using Opencart version 1.5.6.4 with PayPal Website Payment Pro. During the checkout process, on "Step 5: Payment Method" when that method is selected and I hit "Continue" a popup window is displayed (pasted below) from Kaspersky Internet Securuty Web-Antivirus Phishing protection. It also happens with PayPal Payments Pro Payflow Edition. This doesn't happen with Paypal standard payment. This happens both with Chrome and IE. It is Kaspersky Internet Security 2013. Thanks in advance for any input.