I also had this issue this morning, and I believe the short answer is that it was a Walmart.com problem.
This morning I kept getting tapframe.gz automatically downloaded anytime I tried to access anything on Walmart.com. It appeared to be only a Walmart.com problem since any other sites I visited did not have this issue. I did a quick Google search on tapframe.gz and basically only got a reference to this question posted to the community this morning, and some very questionable website that couldn't even spell Walmart right (it was wallmart) that basically wanted you to download a virus scanner on their page (yeah right...) to get rid of the issue.
I contacted Walmart.com support via chat. The first thing they wanted me to do was clear my browser history and restart Safari. I did, and it did not fix the issue. So I contacted Walmart.com support again via chat. This time they wanted me to clear all my cache and cookies in Safari and restart my computer. So I did and also made sure tapframe.gz was removed from my Downloads and trash deleted before I rebooted. Nope that didn't work either.
Contacted Walmart.com support for the 3rd time after doing a little investigation of my own. The problem was isolated to Walmart.com. Appeared to be Safari related (both on my computer and iPhone). Firefox and Google Chrome did not seem to have the same issue when I attempted to access Walmart.com from them. Explained this all again to the Walmart.com service agent via chat. He basically told me it was malware and not a Walmart.com. He even referred me to the very questionable site (which now has mysteriously disappeared) that misspelled walmart and wanted you to download something else to remove tapframe.gz . Thanks but no thanks.
So I tried a few things to see if I couldn't figure out what was causing the problem. Nothing obvious unfortunately after about a half an hour or so. In one final attempt I cleared my history, cookies, and cache from Safari. Removed tapframe.gz from the Downloads and emptied the trash. Rebooted. Surprise...issue appears to be gone when I now access Walmart.com both from my computer and my iPhone. I'll theorize that it was an issue with their site and they finally fixed it since I did not do any Safari cleansing on my iPhone and the issue no longer exists when I access it from there either.
