Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ed94c437a20336…

MALICIOUS

PDF

16.2 KB Created: 2019-05-05 16:47:19 +01:00 Authoring application: mPDF 5.7
MD5: aaacc134d27e8f19448eda3cdf8ee6f3 SHA-1: c6d70ee40b9af6ac25ae5695364f217291eaf3e4 SHA-256: 87ed94c437a2033670a273667120c652b2b7a6ae57fb5f3bc5c285a27c6996e5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or distributing further malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links and the ML detection suggest a high likelihood of malicious intent, possibly to redirect users to phishing sites or download malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/9098094098090097/Thus-Spoke-Zarathustra-A-Book-For-All-And-None-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/6094099090095095/Also-sprach-Zarathustra-Ein-Buch-f-r-alle-und-keinen-by-Friedrich-Wilhelm-Nietzsche-Friedrich-Nietzsche-Fritz-Koegel-Publication-date-1907-by-Friedrich-Wilhelm-Nietzsche.pdf
    • http://loaminoo.linkpc.net/3094097091097/Thus-Spake-Zarathustra-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/9098099096093098/Also-sprach-Zarathustra-Gesamtausgabe-in-4-B-nden-Ein-Buch-f-r-Alle-und-Keinen-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/2092092091093099/Basic-Writings-of-Nietzsche-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/1090095099091097091/Nietzsche-s-Zarathustra-by-Kathleen-Marie-Higgins.pdf
    • http://loaminoo.linkpc.net/1090095099093091098/Zarathustra-s-Last-Supper-Nietzsche-s-Eight-Higher-Men-by-Weaver-Santaniello.pdf
    • http://loaminoo.linkpc.net/4098092093096094/A-Nietzsche-Reader-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/8098098092093091/Nietzsche-F-r-Anf-nger-Also-Sprach-Zarathustra-Eine-Lese-Einf-hrung-by-R-diger-Schmidt.pdf
    • http://loaminoo.linkpc.net/1090093091090090090/Al-m-do-bem-e-do-mal-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/9097095094099090/Joyful-Wisdom-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/8094095097099099/Mas-alla-del-bien-y-del-mal-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/4091093096093091/Beyond-Good-And-Evil-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/3099096097092097/Twilight-of-the-Idols-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/6090099094093091/Schopenhauer-as-Educator-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/8098099094098098/Beyond-Good-and-Evil-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/2091095095093098/The-Anti-Christ-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/9099098096093095/Beyond-Good-and-Evil-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/8098097099099/The-Pre-Platonic-Philosophers-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/3096090099095/The-Anti-Christ-by-Friedrich-Nietzsche.pdf

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