Malicious PDF — malware analysis report

Static analysis result for SHA-256 6938173ba04e628c…

MALICIOUS

PDF

15.0 KB Created: 2019-04-30 05:50:08 +01:00 Authoring application: mPDF 5.7
MD5: de84295d6cbdf17bb01c8cfda6609e5f SHA-1: 46f3306e7cc587577c1a63a9fe093207e335b436 SHA-256: 6938173ba04e628cdb8b297042119798d372b186abb9a9b3db7d1a8e79e8553e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to what appears to be a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic. While the document body is heavily obfuscated, the presence of numerous external links suggests an attempt to manipulate search engine results or redirect users to potentially malicious content. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/1090094093099093092/Twilight-of-the-Idols-or-How-to-Philosophize-with-a-Hammer-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/2092092091093099/Basic-Writings-of-Nietzsche-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/4098092093096094/A-Nietzsche-Reader-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/1090093091090090090/Al-m-do-bem-e-do-mal-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/3094097091097/Thus-Spake-Zarathustra-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/3096090099095/The-Anti-Christ-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/8097097091098098/Al-di-l-del-bene-e-del-male-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/8098097099099/The-Pre-Platonic-Philosophers-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/4091093096093091/Beyond-Good-And-Evil-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/4099098091094093/On-the-Genealogy-of-Morals-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/8095095099093097/Thus-Spoke-Zarathustra-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/5097097092095093/Thus-Spoke-Zarathustra-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/6090099094093091/Schopenhauer-as-Educator-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/4096095094091/On-the-Genealogy-of-Morals-by-Friedrich-Nietzsche.pdf
    • http://loaminoo.linkpc.net/7093093091096096/Thus-Spoke-Zarathustra-by-Friedrich-Nietzsche.pdf

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