Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee90c729400dfdae…

MALICIOUS

PDF

33.7 KB Created: 2019-05-01 17:15:21 +01:00 Authoring application: mPDF 5.7
MD5: cd2562d998289761ae1f7b314de1d663 SHA-1: 0993847641b5094687bc16c29a02b9fe51c7080e SHA-256: ee90c729400dfdae200731bdab6fb70ad122afcad0b2f5d5a24e5fcbfe1d9954
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to these URLs, suggesting they are the primary mechanism for the malicious activity. The intent appears to be directing users to a link farm, likely for SEO poisoning or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://loaminoo.linkpc.net/1090093090098095094/SOFSEM-2004-Theory-and-Practice-of-Computer-Science-30th-Conference-on-Current-Trends-in-Theory-and-Practice-of-Computer-Science-Merin-Czech-Republic-2004-Lecture-Notes-in-Computer-Science-by-Peter-Van-Emde-Boas.pdf
    • http://loaminoo.linkpc.net/9096090097093093/Algebraic-Biology-Second-International-Conference-AB-2007-Castle-of-Hagenberg-Austria-July-2-4-2007-Proceedings-Lecture-Notes-in-Computer-Science-Computer-Science-and-General-Issues-by-Hirokazu-Anai.pdf
    • http://loaminoo.linkpc.net/1091094091095093093/Selected-Areas-In-Cryptography-11th-International-Workshop-Sac-2004-Waterloo-Canada-August-9-10-2004-Revised-Selected-Papers-Lecture-Notes-In-Computer-Science-Security-And-Cryptology-by-Helena-Handschuh.pdf
    • http://loaminoo.linkpc.net/1090097097090092090/Computer-Algebra-in-Scientific-Computing-20th-International-Workshop-CASC-2018-Lille-France-September-17-21-2018-Proceedings-Lecture-Notes-in-Computer-Science-by-Vladimir-P-Gerdt.pdf
    • http://loaminoo.linkpc.net/1090097096099099095/Computer-Algebra-in-Scientific-Computing-19th-International-Workshop-CASC-2017-Beijing-China-September-18-22-2017-Proceedings-Lecture-Notes-in-Computer-Science-by-Vladimir-P-Gerdt.pdf
    • http://loaminoo.linkpc.net/6094098094097096/Information-Literacy-Key-to-an-Inclusive-Society-4th-European-Conference-ECIL-2016-Prague-Czech-Republic-October-10-13-2016-Revised-Selected-Papers-in-Computer-and-Information-Science-by-Serap-Kurbanoglu.pdf
    • http://loaminoo.linkpc.net/6090096095098097/The-Semantic-Web-Latest-Advances-and-New-Domains-12th-European-Semantic-Web-Conference-ESWC-2015-Portoroz-Slovenia-May-31----June-4-2015-Proceedings-Lecture-Notes-in-Computer-Science-by-Fabien-Gandon.pdf
    • http://loaminoo.linkpc.net/8097097095094096/Stochastic-Algorithms-Foundations-And-Applications-International-Symposium-Saga-2001-Berlin-Germany-December-13-14-2001-Proceedings-Lecture-Notes-In-Computer-Science-by-Kathleen-Steinh-fel.pdf
    • http://loaminoo.linkpc.net/1090099091098093090/Web-Web-Services-and-Database-Systems-NODe-2002-Web-and-Database-Related-Workshops-Erfurt-Germany-October-7-10-2002-Revised-Papers-Lecture-Notes-in-Computer-Science-by-Akmal-Chaudhri.pdf
    • http://loaminoo.linkpc.net/1090092095097099095/Computer-Science-Art-by-Franke.pdf
    • http://loaminoo.linkpc.net/5093091092092093/Mathematics-for-Computer-Science-by-Eric-Lehman.pdf
    • http://loaminoo.linkpc.net/1091097098093098095/The-New-Turing-Omnibus-66-Excursions-In-Computer-Science-by-A-K-Dewdney.pdf
    • http://loaminoo.linkpc.net/6091093096096099/Multiple-Choice-Questions-in-Computer-Science-by-Ela-Kumar.pdf
    • http://loaminoo.linkpc.net/1091092098096093098/Math-Companion-For-Computer-Science-by-Zamir-Bavel.pdf
    • http://loaminoo.linkpc.net/6096095092091091/Mathematical-Foundation-of-Computer-Science-by-Rakesh-Dube.pdf
    • http://loaminoo.linkpc.net/1090092097093091098/The-History-of-the-Computer-PC-Peter-s-Computer-Classroom-Book-6-by-Anneline-Kinnear.pdf
    • http://loaminoo.linkpc.net/9096094094090090/Computer-Science-Programming-Basics-in-Ruby-by-Ophir-Frieder.pdf
    • http://loaminoo.linkpc.net/2095095096093096/Algorithms-To-Live-By-The-Computer-Science-of-Human-Decisions-by-Brian-Christian.pdf
    • http://loaminoo.linkpc.net/3090090091/Algorithms-to-Live-By-The-Computer-Science-of-Human-Decisions-by-Brian-Christian.pdf
    • http://loaminoo.linkpc.net/6097091096091099/Cognitive-Science-and-Its-Applications-for-Human-Computer-Interaction-by-Raymonde-Guindon.pdf
    • http://loaminoo.linkpc.net/1091094091095093093/Selected-Areas-In-Cryptography-11th-International-Workshop-Sac-2004-Waterloo-Canada-August-9-10-2004-Revised-Selected-Papers-Lectu

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