DISCLAIMER

This Tutorial is made for educational purpose only, I didn't harm anyone everything shown an used in this Tutorial for testing belongs to me such as the computer, smartphone and my website. Every Tutorial on utopian.io is made to teach people how to stay safe and help others for making them safe.
HACKING, CRACKING, STEALING OR ANY SUCH KIND OF ACTIVITY IS A CYBER CRIME WHICH CAN LAND YOU IN JAIL. I DO NOT SUPPORT ANY SUCH KIND OF ACTIVITY

Introduction

peepdf is a Python tool to explore PDF files in order to find out if the file can be harmful or not. With peepdf it's possible to see all the objects in the document showing the suspicious elements, supports the most used filters and encoding, it can use to encode, encrypt or decrypt a PDF file. Some time the Decrypt command give error so i provide a Alternative way to Unlock the Locked PDF.

What Will I Learn?

• How to check deep details of any PDF File.
• How to Encrypt PDF with custom Password.
• How to Decrypt PDF

Requirements

• Termux :
  Download Link
• PDF Unlocker
  Download Link
• GitHub Link
  https://github.com/jesparza/peepdf.git

Difficulty

• Intermediate

How to setup peepdf in Termux

• 1: Run Termux and execute the command type pkg update && pkg upgrade && pkg install python2 && pkg install git and press Enter.

• 2: Now type command cd peepdf and press Enter.

• 3: Now type command chmod +x peepdf.py and Press Enter

• 4: Type command python2 peepdf.py -i and press Enter.
  

How to check details of a PDF

• 1: Type commandopen/sdcard/FileName.pdf . Here FileName.pdf is the name of your PDF File with .pdf extension. In my case file name is "name.pdf".

• 2: This will open the PDF file and give all its detail.

• 3: Now you can check more detail by typing the command tree
  

How to encrypt PDF

• 1: After open the PDF as describes above, then type command encrypt Yourpassword Here "YourPassword" is Password for PDF file to open. In my case i chose "1234"

• 2: Now type command save and press Enter.
  

• Your PDF file is now password protected
  

How to decrypt

• 1: First open the file again by command open -f /sdcard/FileName.pdf and press Enter.

• 2: Then type command decrypt YourPassword and press Enter. Password must be the same as set to encrypt the same PDF.

• If this decrypting method gives error you can use simple use PDF Unlocker App.(Link in Requirements)

How to unlock with PDF Unlocker

• 1: Install and Run the app and click on 'OPEN PDF' and select your encrypted file

Select the file

• 2: Type the password to open encrypted PDF and then click on "back-key" once and click on "Unlock". This will save a unlocked PDF file in the same directory
  

• After click the back-key once click on Unlock
  

• And then click on OK
  

• 3: Your file is now decrypted and saved in the same directory
  

Curriculum

How to setup and run python and C++ in Android Termux

Tutorial 1: How to download, Install, Run and Use Fish-shell in Termux [Also work for non-rooted devices]

Tutorial 2: How to make a call and send SMS using Android Termux

Tutorial 3: How to install SQLmap in Android Termux [Also work for non-rooted devices]

Tutorial 4: How to Trace exact IP Location on Android Termux [Also work for non-rooted devices]

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Posted on Utopian.io - Rewarding Open Source Contributors

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