I downloaded a pdf earlier, and I was trying to send it to my friend, but gmail said that it detected a virus. So I ran it through virustotal.com and only 1 out of 56 scanners came up with a virus - ClamAV returned with "PDF.Exploit.CVE_2014_8449". None of the other 55 scanners came up with anything. I looked up CVE_2014_8449 and found this: "Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.13 and 11.x before 11.0.10 on Windows and OS X allows attackers to execute arbitrary code via unspecified vectors". I'm not sure what this means, and should I be worried about this even though only 1 of the 56 scanners found this? How can I tell if this is an actual problem? Should I just get rid of the pdf?