Tow of them are more interesting ..
I used to type texts in terminal previously! One day i typed a lot about my situation in the society were i was living! such as:
I do not believe in any religion while i have to live in a country where religion governs .. and i suffer .. and annoyed .. etc
Few days later those 2 files having the word " believe" in their names appeared!
I know that Internet is full of malware that is why i do not connect to Internet using my PC and i have removed any suspicious file or program .. but these files .. they not only can not be removed but also seem to be harmless ..but :
What do you mean by saying: the file name changed?!
Once i changed my hard disk .. in moving old hard disk content .. a message said:
These .. files were not moved .. they do not exist! This was in case of some of them which were empty files but the same file with text inserted content were transferred! .. so which one has changed name? and how did you find about that ..?
I just took a picture using my mobile and sent the picture to : instagram!
As i know names printed on pictures can not be changed automatically!!