![]() Predefined threshold, the document will be classified as malicious.Ĭredits to: Daiping Liu and Haining Wang from College of William and Mary and Angelos Stavrou from George Mason University. Runtime detector will compute a malscore. Javascript executes to the end or a critical operation occurs, the Tries to collect evidence of potential infection attempts. Monitoring code inside will cooperate with our runtime monitor, which When an instrumented PDF is loaded, the context The back-end component works in two steps, runtime monitoring and Tools like, this can be done easily and very fast. PDF in which the document is readable but non-modifiable, we need to The document is encrypted using an owner’s password, i.e., a mode of It and add context monitoring code for JavaScript. When a document has been decompressed, the front-end will instrument A set of static features are extracted in this process. first parses the document structure and then decompresses the objectsĪnd streams. Phase-I Static Analysis and Instrumentation Suspicious behaviors of a PDF reader process in context of JavaScriptĮxecution and confines malicious attempts. Instrumented document is opened, the back-end component detects Parses the document, analyzes the structure, and finally instruments In Phase-I, the front- end component statically Our system consists of two major components, front-end and back-end, The following quotes and figure give insight in how their developed detection system approached malicious PDF detection. ![]() So they rely on switching between an app ,file chooser and a scanner. Other apps require payment to access their api/sdk or simply don't have a possible way to do it. In their research-paper they introduce a context-aware approach toĭetect and confine malicious JavaScript in PDF through staticĭocument instrumentation and runtime behavior monitoring. Android PDF document scanning app Main point of this app is to scan or select existing PDF documents simply using intent or chooser. The research is called Detecting Malicious JavaScript in PDF through Document Instrumentation. I did some additional searching and found an interesting research-paper (easily readable and just 12 pages).
0 Comments
Leave a Reply. |