What to do?

I have an ethical situation here. I've received a fraudulent post-doctoral application. This applicant has, on his CV, listed quite a few publications in peer reviewed journals. Some of them are real. Others simply don't exist. There are no papers by this author in the listed journals. There are no publications with the listed titles in any journal. One of the imaginary papers is supposed to be in Nature, but the listed volume number doesn't even correspond to the listed year, and so on. I am very confident that the CV is fraudulent.

The question then is what, if anything, should I do about this? I don't really want to waste a lot of my time, but this is fairly serious misconduct. I could write to him and request copies of the papers, or an explanation of Figure 2 in the Nature paper. I could tell his boss on him, assuming he actually works where he says he does. I could simply reject the application. I'm not certain what, if anything, is the standard response to this situation. There are confidentiality rules that apply to job applications, even fraudulent ones, so public humiliation is out of the question.