diff --git a/app.coffee b/app.coffee
index f9b7760..56fd9bf 100644
--- a/app.coffee
+++ b/app.coffee
@@ -4,6 +4,8 @@ logger = require "logger-sharelatex"
 logger.initialize("clsi")
 smokeTest = require "smoke-test-sharelatex"
 
+Path = require "path"
+
 Metrics = require "metrics-sharelatex"
 Metrics.initialize("clsi")
 Metrics.open_sockets.monitor(logger)
@@ -33,7 +35,13 @@ app.delete "/project/:project_id", CompileController.clearCache
 app.get  "/project/:project_id/sync/code", CompileController.syncFromCode
 app.get  "/project/:project_id/sync/pdf", CompileController.syncFromPdf
 
-staticServer = express.static(Settings.path.compilesDir)
+staticServer = express.static Settings.path.compilesDir, setHeaders: (res, path, stat) ->
+	if Path.basename(path) == "output.pdf"
+		res.set("Content-Type", "application/pdf")
+	else
+		# Force plain treatment of other file types to prevent hosting of HTTP/JS files
+		# that could be used in same-origin/XSS attacks.
+		res.set("Content-Type", "text/plain")
 app.get "/project/:project_id/output/*", (req, res, next) ->
 	req.url = "/#{req.params.project_id}/#{req.params[0]}"
 	staticServer(req, res, next)
diff --git a/test/acceptance/fixtures/examples/knitr/output.pdf b/test/acceptance/fixtures/examples/knitr/output.pdf
index 133becb..a1f9379 100644
Binary files a/test/acceptance/fixtures/examples/knitr/output.pdf and b/test/acceptance/fixtures/examples/knitr/output.pdf differ
diff --git a/test/acceptance/fixtures/examples/markdown-included/chapters/chapter1.md b/test/acceptance/fixtures/examples/markdown-included/chapters/chapter1.md
deleted file mode 100644
index 920d9be..0000000
--- a/test/acceptance/fixtures/examples/markdown-included/chapters/chapter1.md
+++ /dev/null
@@ -1,17 +0,0 @@
-Section Title
--------------
-
-* List item one
-* List item two
-
-: Sample grid table.
-
-+---------------+---------------+--------------------+
-| Fruit         | Price         | Advantages         |
-+===============+===============+====================+
-| Bananas       | $1.34         | - built-in wrapper |
-|               |               | - bright color     |
-+---------------+---------------+--------------------+
-| Oranges       | $2.10         | - cures scurvy     |
-|               |               | - tasty            |
-+---------------+---------------+--------------------+
diff --git a/test/acceptance/fixtures/examples/markdown-included/main.tex b/test/acceptance/fixtures/examples/markdown-included/main.tex
deleted file mode 100644
index bfda962..0000000
--- a/test/acceptance/fixtures/examples/markdown-included/main.tex
+++ /dev/null
@@ -1,9 +0,0 @@
-\documentclass{article}
-\usepackage{longtable}
-\usepackage{booktabs, multicol, multirow}
-
-\begin{document}
-
-\input{chapters/chapter1}
-
-\end{document}
diff --git a/test/acceptance/fixtures/examples/markdown-included/output.pdf b/test/acceptance/fixtures/examples/markdown-included/output.pdf
deleted file mode 100644
index 81a1136..0000000
Binary files a/test/acceptance/fixtures/examples/markdown-included/output.pdf and /dev/null differ
diff --git a/test/acceptance/fixtures/examples/markdown-standalone/main.md b/test/acceptance/fixtures/examples/markdown-standalone/main.md
deleted file mode 100644
index 036d971..0000000
--- a/test/acceptance/fixtures/examples/markdown-standalone/main.md
+++ /dev/null
@@ -1,23 +0,0 @@
-% Title
-% Author
-% Date
-
-Chapter title
-=============
-
-Section Title
--------------
-
-Hello world. Have a nice table:
-
-: Sample grid table.
-
-+---------------+---------------+--------------------+
-| Fruit         | Price         | Advantages         |
-+===============+===============+====================+
-| Bananas       | $1.34         | - built-in wrapper |
-|               |               | - bright color     |
-+---------------+---------------+--------------------+
-| Oranges       | $2.10         | - cures scurvy     |
-|               |               | - tasty            |
-+---------------+---------------+--------------------+
diff --git a/test/acceptance/fixtures/examples/markdown-standalone/output.pdf b/test/acceptance/fixtures/examples/markdown-standalone/output.pdf
deleted file mode 100644
index 9991ab8..0000000
Binary files a/test/acceptance/fixtures/examples/markdown-standalone/output.pdf and /dev/null differ