FaceTime App Randomly Opening

Has anyone experienced the Facetime app seemingly randomly launching on it's own? I have yet to find a pattern or anything that could be triggering it in order to replicate. I'm at a loss for where to start with inspecting further. I've observed it without being near the keyboard or mouse. It has happened about 10 times so far over the past week. I have never actually used the app and have Facetime disabled. There is no suggestion of an incoming or outgoing calls. Other apps that have been open when this happened: Filemaker, Safari, Mail, Adium, Messages, and VMWare Fusion. I have Sophos Home installed and would hope it would detect an intrusion.

Just in case this happens to anyone else, I've figured out part of this issue. There was a particular kind of pdf that I use in my job that has data tables on it. FaceTime was launching because it was inappropriately detecting phone numbers in the data in the pdf, and I was having trackpad issues. So, it was like I was clicking on the data detection leak.

FaceTime App Randomly Opening
 
 
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