I did not try the normally installed version.Ĭhrome users already have another feature-light viewer built into their browser that shares many of the advantages of SumatraPDF. PDFs will open in SumatraPDF rather than a browser window.
If not, click the Browse button and navigate to it. The portable edition of SumatraPDF may or may not be in the list of available applications for viewing PDFs. Then find PDFs under the Content Type column (the exact name varies depending on the default Windows PDF viewer) and in the Action column, click on the drop-down and select "Use other.". To do so, click on Tools -> Options -> Applications tab. In Firefox 5, the portable version of SumatraPDF can be made the default PDF viewer. As with any portable application, I suggest renaming it to include a version number and/or a date. Unzipped, the EXE is just over 4 megabytes. The portable version from the author is downloaded as a zip file containing a single SumatraPDF.exe file. Given a choice, I always prefer portable applications. Portable versions of SumatraPDF are available both from the author, Krzysztof Kowalczyk and at. That said, SumatraPDF does have one useful feature: it remembers where you were in a PDF file and when you re-open the same PDF it takes you back to where you left off. How many options does the Adobe Reader offer? Frankly, I don't want to count them all. In contrast, version 4 of the Foxit PDF reader has 15 different categories of preferences, most with more than one option. To illustrate how feature-free Sumatra is, the screen shot below shows the available configuration options, all six of them. Updates do not require a re-boot of the operating system Unlike the Adobe Reader, it does not install software that runs when Windows bootsĨ.
It is available in two portable editions and a normally installed editionħ. It's not popular so there is little reason for bad guys to find and target bugs in the software.ĥ. Less code makes for a smaller attack surface.Ģ. For example, SumatraPDF does not support either JavaScript or Flash. Windows users have an excellent option, the SumatraPDF viewer.ġ. But the problem is bigger than JavaScript.* The problem is bloated, buggy, popular software.
The malicious PDF in question started out by exploiting JavaScript, so a knee-jerk reaction is to disable JavaScript in your PDF viewer. By using a number of utilities, we are able to reverse engineer the techniques in malicious PDFs, providing insight that we can ultimately use to better protect our systems. Because PDFs have so many "features," hackers have learned how to hide attacks deep under the surface. PDFs are widely used business file format, which makes them a common target for malware attacks. It's one thing to read about malicious PDFs, but quite another to see one up close and personal. The author, a security researcher, offered a step by step dissection of a malicious PDF file. This was illustrated last month in an article, Anatomy of a PDF Hack, by Tomer Bitton. Without question, if someone emails you a PDF file, opening it in the Adobe Reader is a Defensive Computing mistake.
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