During that time we have investigated billions of URLs and found more than three million unique URLs on over 180,000 web sites automatically installing malware. During the course of our research, we have investigated not only the prevalence of drive-by downloads but also how users are being exposed to malware and how it is being distributed. Our research paper is currently under peer review,

http://googleonlinesecurity.blogspot.com/2008/02/all-your-iframe-are-point-to-us.html

http://research.google.com/archive/provos-2008a.pdf

SERPs? No.
Pages linked by SERPs? Yes.