Script pdf exploit

In previous years, cybercriminals embedded malicious script to install malware and steal user credentials. The scripts that are responsible for malicious behavior can be written in a scripting language that PDF supports. JavaScript is the most popular for this purpose. A launch action launches an application or opens or prints a document. When we open any malicious PDF file, it will execute the JavaScript and it exploits the JavaScript; after that, the shell code is processed and a Trojan will be executed from the Internet.

Adobe Reader is prone to a stack-based buffer-overflow vulnerability. We can see that our PDF file was created. You can access this PDF by using the given path. Before we send the malicious file to our victim, we need to set up a listener to capture this reverse connection.

Analyzing a PDF file involves examining, decoding, and extracting the contents of suspicious PDF objects that may be used to exploit a vulnerability in Adobe Reader and execute a malicious payload. There is an increasing number of tools that are designed to assist with this process. Mainly, analysis of PDF can be done in two ways: online and offline. Online PDF analyzers makes our work easier.

We just have to submit the malicious PDF file and the online analyzer starts scanning the uploaded PDF for several known exploits. Wepawet is a service for detecting and analyzing web-based malware. Upload a sample or specify a URL and the resource will be analyzed and a report will be generated. PDF Examiner by Malware Tracker is able to scan the uploaded PDF for several known exploits and it allows the user to explore the structure of the file, as well as examining, decoding, and dumping PDF object contents.

As we can see, it passed with flying colors so our IT admin is willing to open this file to quickly implement these very important upgrades. Clicking the file opens Adobe but shows a greyed out window that never reveals a PDF. Instead, on the attackers machine what is revealed…. We now have a shell on their computer through a malicious PDF client side exploit. Then obtain system info, start a key logger and continue exploiting the network.

Client Side Exploits. Client Side Exploits in Metasploit As we have already discussed, Metasploit has many uses and another one we will discuss here is client side exploits. So we start by creating our malicious PDF file for use in this client side exploit. If you are manually typing in a message: - First line must be received within 60 seconds.

In Parasite , a poor South Korean family cons their way into becoming employees in a wealthy family home. When the owners leave for a camping trip, the con artists discover a dark secret in the basement that leads to a chain […]. Download the Deadpool script PDF by clicking the link or the icon above. In Deadpool , a wise-cracking, former mercenary, Wade Wilson, dons a superhero costume to cover his disfigurement. After Wilson is diagnosed with late-stage cancer, he turns to an underworld character named Ajax for a cure.

The cure leaves him savagely scarred, but […]. Download the Arrival script PDF by clicking the link or the icon above. In Arrival aliens come to Earth. Louise Banks is a linguist retained by the U. Army in hope of establishing contact. She ends up communicating with the octopus-like creatures through symbols. The aliens offer […].

Download the Moonlight script PDF by clicking the link or the icon above. Moonlight is coming-of-age drama told by exploring three life stages of the main character, Chiron. In his youth, the boy is beat up and abused for being gay.

As a teen, Chiron has his first […]. In La La Land a jazz pianist and aspiring actress fall in love in Los Angeles while pursing their dreams. Through failed auditions and firings, the two support each other to reach for […]. Because of her aptitude for analytical geometry, Katherine […].

Diana, an Amazonian warrior woman lives on a hidden island with others of her kind. The Shape of Water , Elisa, a mute woman works as the cleaner at a secret government facility. The facility houses a mysterious amphibious, humanoid creature captured in a river in South America and […]. In the film, Miguel Rivera, a year-old boy and a budding musician steals a guitar from a mausoleum and ends up being magically transported to the land of the dead.

Miguel risks being trapped there forever unless he […]. Based on the book by the same name, the film follows a year-old boy, Elio, as […]. Time for the 90th Academy Awards ceremony in Hollywood. Below are the lists for in the categories of Adapted Screenplay and Original Screenplay.

Download the Downsizing script PDF by clicking on the link or the icon above. Thor: Ragnarok , also know as Thor 3, is part of the Marvel Comic series of movies centered on a superhero-style character named Thor.

Thor forces his brother Loki to help him find their missing father. When […]. Lady Bird is a coming-of-age film written and directed by Greta Gerwig. Lady Bird begins to […]. In Casablanca an American expatriate living in Morocco during World War II must choose between the woman he loves or helping her husband to continue to fight the Germans.

Screenwriters: Julius J. Epstein, Philip G. Epstein, Howard Koch See how much […]. Kate and Kevin are […]. Screenwriting Made Easier Find the perfect movie script example ready to download. Looking for a particular script? Search for Screenplays Search for:. For more screenplays, see our Full List. Whiplash Script PDF Whiplash Whiplash is a psychological drama focused on a talented young drummer enrolled at a competitive music conservatory. El Mariachi Script PDF El Mariachi El Mariachi is Western action story that follows a traveling Mexican musician who is mistaken for a notorious killer and must run from the hitmen hired to take him down.

Bird Box Script PDF Bird Box Bird Box is a Netflix horror thriller story about a post-apocalyptic world in which a mother must save herself and her children from an enemy who forces people to commit suicide.

Juno Script PDF Juno Juno is a coming-of-age comedy-drama about an offbeat teenager dealing with an unplanned pregnancy. Alien Script PDF Alien Alien is a classic science-fiction horror film that follows the crew of a space tug as they encounter a deadly alien nesting on their ship.

The above string is the one I will replace my attribute with in this demo. It find s the Base64 encoded payload, decodes it, saves the contents to an. Figure 1. Since we are using Powershell we need to include our Powershell formatted command, which injects the payload into a file:. The -i indicates the input PDF which we will hide the malware in, our payload -p is a file we want to hide such as a Meterpreter reverse shell or any other.

We copy the contents of each page as seen in the for loop. Lastly we write the contents of this object to the output provided by the user creating a new PDF which contains the contents of the initial PDF with the addition of the JavaScript.

The JavaScript is pretty simple, we create an array holding the file names of the malicious files we embedded. We then enter a for loop and iterate through the files array we created. The second parameter nLaunch which will save and open the attachment when given a value of 2. As shown above, the JavaScript will extract the embedded files.

This starts with checking the encoding on the payload. The user can embed any sort of payload into the PDF file, most commonly it will be a binary executable or its Base64 representation, if they chose to encode the file themselves beforehand. The script handles both scenarios with a Base64 encoding check, and will execute differently depending on if the payload is encoded or not.

Below we can see the Base64 check code.