A common technique, used by malicious attackers to fool their victims, is using the Unicode special character U+202E known as an annulment from right to left to make the malicious file appears as a PDF document instead of a potentially dangerous executable file.
To understand this concept, let's imagine that our malicious file is "document.exe" (see Figure 1):
Figure 1: Malicious file recently created with no changes.
Now we are going...
