cracking encrypted PDF password using Dictionary Attack


In this post we will crack encrypted PDF with a very easy method. This is a very simple and easy method for cracking encrypted PDF password which is helpful for beginners in password cracking. There are also different method for cracking PDF password by generating hash and cracking it with John the Ripper but we are going to use dictionary attack for this.

Lets crack the code
In below screen shot we can see when i am trying to access a PDF its asking for password.


 STEP 1 First open your terminal and type apt-get install pdfcrack -y and press return.


It will install pdfcrack on your machine 


 Now before cracking the password we need do generate some wordlist by keeping in mind our target, before doing this we have to do some reconnaissance to gather information about our victim. 

STEP 2  After gathering enough information about our target its time to generate wordlist . To do this first type apt-get install cupp and then type cupp -i. 

STEP 3  cupp will ask for your target information like his name, his Surname, DOB, pet name so just enter your target information as asked.


STEP 4  It will ask to enter some keywords that could be victim's nick name , phone number etc. So enter your custom words as shown below.


STEP 5  Now it will ask for enter random number at end of word and to enable l33t mode , You can use this options if your target is some geek or computer enthusiasm so in this case i am going to use these options and then it will create your wordlist.


STEP 6  It is possible that the password may not be found in this wordlist and could be some random words so i am going to merge this with some large wordlist for this i am going to use rockyou.txt which you can find at /usr/share/wordlists/  extract this at the same place where your generated wordlist is.

STEP 7  Now its time to merge these two wordlist, for this type cat "your older wordlist name" "other wordlist name " >  "new wordlist name".

For example in this case it will be cat shaquib.txt rockyou.txt > modified.xt


STEP 8  We have prepared our hack now its time to crack the pdf so type pdfcrack -f "your pdf name" -w your created wordlist" as in this case pdfcrack -f /root/downloads/encrypted.pdf -w /root/Desktop/modified.txt  


It will start the Attack 


And within some minutes we successfully cracked the password of this encrypted PDF file.



For more stuff you can follow us on : Facebook
And you can also follow our Page  

 


Comments

  1. Venkat30 March 2020 at 00:53

    apt-get install pdfcrack -y is showing error

    ReplyDelete
  2. Anonymous6 April 2022 at 23:14

    Cracking Encrypted Pdf Password Using Dictionary Attack >>>>> Download Now

    >>>>> Download Full

    Cracking Encrypted Pdf Password Using Dictionary Attack >>>>> Download LINK

    >>>>> Download Now

    Cracking Encrypted Pdf Password Using Dictionary Attack >>>>> Download Full

    >>>>> Download LINK 4K

    ReplyDelete

Post a Comment

Popular posts from this blog

USB forensic : Find the history of every connected USB device on your computer

Image
Sometime we need to know what USB devices were connected to our computer in our absence.These information could be very useful for forensic examiner or in general case also where we just want to know what USB devices were used . How do this works We all know about registry on windows, a registry is a database in windows which stores settings of the operating system, hardware devices, software programs and user preferences settings. Whenever we insert a USB drive in a computers a registry key with name "USBSTOR" is created this registry key store information about that USB device and whatever info the OS need to know can be found in this registry key.  Finding the all attached USB history To find the usb  history of your device just do the following step below  STEP 1  Go to run and type "regedit".  STEP 2: In the registry go to  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USBSTOR and there you will find a registry key with na
Read more

Crawling pastebin to find specific pastedump

Image
In this post we will crawl into pastebin.com to find specific pastebin dump. For example if we want to find paste for specific keyword like "password" we can get all the paste containing that keyword. Preparing the Attack Usually some sites don't allow web crawling and by doing so you may get banned from accessing that site, which will also make this method vain.  So before doing this i recommend you to use THIS tool to anonymize all your traffic so that if we get banned we can switch our IP address immediately.  Start the Attack STEP 1 Clone into this URL by typing https://github.com/kahunalu/pwnbin.git STEP 2 Now type python pwnbin.py -k pass -n 10 -m 10 here "-k" is the keyword you want to search for "-n" is the number of paste you want to crawl and "-m" number of keywords matches you want.  As we can see above we have found a match and it's now saved to log.txt file so it's time to see the dump co
Read more

Hack WinRAR password by using Brute force attack

Image
Winrar have option to password protect your files in it.Some times we got password protected rar files or we forget our password so we go online to search to crack password of these type of rar files.Some website tell about some program who promises to decrypt the password, But unluckily there are lots of spam ,advertisement, on internet who ask you to complete the survey to download the program that can unlock the password and absolutely that's a spam,some websites also provide direct link downloadable  program to crack rar password but when we download them instead of doing that, they install lots of unwanted sponsors software and make your PC slower.But now we have a easiest way to get the password of rar file by using brute force attack. No spam,no survey,no unwanted software and with proof.So lets start the hack and follow some simple  step by step guide given below.  1 > For example i am going to set password in rar file 2> Now when ever i am try
Read more

Fileless malware Analysis with Cuckoo sandbox

Image
What is cuckoo Sandbox Cuckoo is a dynamic malware analysis sandbox which is open source and completely free. We can submit any malicious binary file and cuckoo will provide a detailed report of the malicious file, including the behaviour of that file during execution.   What is Fileless Malware A fileless malware is a favorite technique for malware authors, what this type of malware does, it doesn’t write anything on the disk to bypass mostly string base detection. The malware executes an obfuscated command usually PowerShell and during run time antivirus could not detect the strings which are being executed and after injecting it in memory the command get deobfuscated. Cuckoo Interface and sample analysis To run cuckoo just type cuckoo from your terminal, this will start cuckoo service. Now to get the web interface type cuckoo run webserver this will start the cuckoo web interface on its defined URL and port address as shown below.
Read more

Web application penetration testing: Tools and Techniques for web security auditing

Image
Every pentester has it's own tool and technique for web app security auditing, Some time it depend on the type of website  we are pentesting. We are gonna see some common tool and technique that can help us to audit our web application security. Detecting web application firewall and other services You can start with by detecting is there any web application firewall in use? Later we can see if there's any way to bypass it.  Recommend tool :  fofa.so It is a cyberspace search engine launched by White Hat. It can help researchers or enterprises quickly match network assets by performing cyberspace mapping, for example, analyzing the scope of vulnerability.  shodan.io It is most poplar search engine among pentester for finding various online vulnerable IoT devices, online open ports f rom various web servers. wafw00f   This tool allow you to detect and identify what Web Application is in use that is protecting the website.  Bypassing Cloudfl
Read more