I'm assuming this is a scam but I've never seen anything like this before. I've been getting emails with a title that says invoice with the "invoice" number, from [insert name], and the same name is the only thing in the body of the email. They all have a PDF attachment titled with a long stream of numbers and letters. I've received dozens of these emails, all different names and invoice numbers for the last couple months. I delete them all without opening the attachment of course but no one I've asked about this has received anything like this. Has anyone else seen this? I'm really just curious... I delete them but it's a really odd scam format. At first I thought maybe someone's business email address is close to mine but I still didn't open the attachments... it's been happening too frequently and for too long to be an accident, I believe. Thoughts?