Which of the following commands would MOST likely indicate if the email is malicious?

A user receives a potentially malicious email that contains spelling errors and a PDF document. A security analyst reviews the email and decides to download the attachment to a Linux sandbox for review.

Which of the following commands would MOST likely indicate if the email is malicious?
A . sha256sum ~/Desktop/file.pdf
B . file ~/Desktop/file.pdf
C . strings ~/Desktop/file.pdf | grep "<script"
D . cat < ~/Desktop/file.pdf | grep -i .exe

View Answer

Answer: A