Safeguard Secure PDF Viewer can be installed on any device running Windows, Mac, iOS or Android, and can be download from our web site. Our installed Viewers let you use protected PDF documents offline (subject to controls set by the document Publisher), are quick, and provide enhanced functionality. Copy control measures enforce document protection whilst remaining transparent to the document user. Document controls are set and licensed by the document publisher and cannot be altered by the user or Locklizard. Safeguard Secure PDF Viewer is a FREE standalone application that enforces the licensed use of secure PDF documents (for example how long they can be viewed, if they can be printed, etc.). Safeguard Secure PDF Viewer supports PDC files protected with Safeguard PDF Security and Enterprise PDF DRM. Safeguard Secure PDF Viewer controls authorized viewing of secure PDF files published in the PDC file format. PDF document security viewer implementing DRM controls ¹ nspawn is not a security feature, but is good enough for that purpose.Secure PDF File Viewer for complete PDF File Security Yet my reasons are different and the answer is from the perspective of security and security alone. I fully resonate with the idea of not running scripts in PDFs. And such bugs are fixed quickly.ĭon’t consider the above comments simply dismissive. They are also the most attacked ones, but typical attacks will be against large populations - it is unlikely to see a 0-day campagain against Arch Linux users. As it happens, those are the most hardened JavaScript environments available, since one of their main tasks is containing JavaScript. If you are not expecting spear attacks, you may consider using your web browser for viewing PDFs, with a separate profile. There are various ways to detect JavaScript in PDF, which may be of interest to you: see the response from Kurt Pfeifle. Of course neither gives you “100% security” and the deeper you go, the more pain you get. Depending on how much you value the security: you may go as far as using a VM, a cloud server just for that task, or an air-gapped computer. If you want to be very secure: pdftocairo from poppler with nspawn¹, and then view the pages or combine them back into a clean PDF. Therefore any PDF reader and most PDF conversion tools are theoretically vulnerable. This is one of the reasons NoScript disables them on websites. The environment is limited, but is enough to be used as an aid in an attack. It helps a lot, but don’t overestimate both the risk and the gains from avoiding it.Īll PDF viewers support custom typefaces and, because of hinting, all typefaces can contain executable programs. Don’t fall into thinking, that disabling scripting improves security by extreme amount. The attacker still needs to break out of the execution environment. If the format offers programming features, it makes the attack much easier - but is not, by itself, enabling it. Basic plaintext file editors are known to have ACEs, as well as image processing programs even while opening BMP. You do not need to have support for any particular feature of any format to be vulnerable. Set your threat model first, determine your budget, decide how much effort you are going to put into it. And that doesn’t scale well: becomes prohibitively expensive and cumbersome as you travel into the “more secure” direction. There is no “secure” and “unsecure”: there is only “more secure” and “less secure”. As always, the standard notice: security is a spectrum, not a binary option.
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