PDF (Portable Document Format) 文件格式是电子发行文档的事实上的标准，Adobe Acrobat Reader 是一个查看、阅读和打印 PDF 文件的最佳工具。而且它是免费的。新版增加了两个 Acrobat plugs-ins (Acrobat Search and AutoIndx)，它可以在硬盘、CD 和局域网中搜索用 Acrobat Catalog tool 创建了索引文件的多个 PDF 文件。下载:Adobe Reader 9.1.3
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Changes: Several critical vulnerabilities potentially allowing remote code execution were resolved. They have been reported as CVE-2009-1862, CVE-2009-0901, CVE-2009-2495, CVE-2009-2493, CVE-2009-1863, CVE-2009-1864, CVE-2009-1865, CVE-2009-1866, CVE-2009-1867, CVE-2009-1868, CVE-2009-1869, and CVE-2009-1870.