How to completely get rid of the jason.html file?

Question

JavaScript

Hello!
On the galaxy s4 gt i-9500, a file with the nasty name jason.html appeared. Storage/emulated/0/ straight to the root. At first I didn’t even attach any importance, the file is not executable, I thought that one of the optimizer-cooler-manager programs was moving files and I simply deleted these traces. Reloaded the pipe and voila, jason is back with us. I rested my horn, demolished it 5 times in a row and rebooted ... I got tired, it is deleted, but it comes again ... and moreover, it grows a little, but given that it is html, it has grown to a maximum of 450kb while I was sleeping. He appeared only after the reboot, I repeat .. now when he wants .. In fact, it does not cause harm, but it just makes me terribly angry for a couple of weeks now.
I started to google, but there is no information, as such, about him. Piece by piece, another 5 people at different times in 5 years asked on the forums and without an answer. But he constantly throws out developers on the sites, where they post their scripts, etc., but they are not very talkative there. And if you search in the search, starting with the name, then almost certainly on an English-language site and then sit there and then read in English also in slang ... in the end they just discuss scripts, it turns out ... some of my applications, pipe model, rom, are indicated in this code something that is rutted ... the key value constantly flickers there, what will happen next?
I can open it, edit it, delete everything or, on the contrary, write a ton of characters there, it doesn’t matter ... it will still return to its original form after a while + there will be a second edition. If you delete and just create the same one of your own, so that it doesn’t seem to replace it, it doesn’t work out. I edited it, set it to read only, without writing, then jammed through root applications all text programs + editor management processes from the system, like "HTML viewers". As a result, I myself can neither open it nor change it ... after half an hour I look at the file again it has grown ... how is it, there was nothing to edit it on my device ??
I archived it with a password, creating another duplicate of his file, all to no avail. Today, through the root browser, the program Rom toolbox (I only have a free one) wanted to deprive him of write rights at this level. It was rw / rw / rw ... unchecked, but the program gives out: changing permission was not successful. Please note that some file systems do not allow permission changes. It seems like I'm already walking somewhere nearby ..? Googled it again, opened the terminal emulator in the same rom, tried to do something there, killed it for half a day. I'm not a programmer, and for the first time ever with this linux command line, all the more, maybe I didn’t get there at all. I’ve already stocked up on programs, I’m thinking of flashing the phone, but an ambush can turn out the same ... when backing up, it will register there, and then again it will go to my home, only on lollipop already ... or will it be deleted when clearing the cache and dalvik cache ?? I will also be stitching for the first time,
I threw it off on several scanner sites ... they don’t write viruses. I can even throw it away, but it’s useless just to look at the code if you can tell by handwriting what you want ... HELP ME OUT, BE GOOD! Thank you for attention!!!

Answer 1

Factory reset as a last resort.

Answer 2

That's right - this is when:
1. The page load speed is less than 0.1 sec.
2. Translation file - as an array for tags and content (2 files).