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this isnt just a blank pdf file theres actually malware inside this pdf file and im going to show you how to find it lets scan the file two things jump out first theres javascript in the pdf second theres open action which means that the pdf will do something when its open lets take a look at what the javascript contains straight away we can see theres an invocation of a function this is the name of the random function here we can see object 7 references 10 object 12 references 13 so lets take a look at object 13. lets dump out the contents of object 10 into a text file lets open it if you dont know what youre looking at youre looking at obfuscated javascript code that will run when you open the pdf im going to quickly edit the function ideal for scatter the code off camera but basically this is what it does its a javascript heap spraying technique basically its injecting shell code into the applications memory lets figure out what the shellcode does lets dump out