Malicious PDF — malware analysis report

Static analysis result for SHA-256 189d4440eb3f2e49…

MALICIOUS

PDF

17.7 KB Created: 2019-05-02 02:31:04 +01:00 Authoring application: mPDF 5.7
MD5: caf2ffcec2b94486713b2126b02b8224 SHA-1: e06f9a959198447bdd03ae18b81933c1a043f462 SHA-256: 189d4440eb3f2e490255cd557fae16e7cfd0eafa6d8ca93ccba99fb0f00f36de
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, suggesting a link farm or redirection scheme. While the ML classifier flagged it as malicious, the specific intent beyond linking is unclear due to the lack of executable scripts or clear malicious document body content. The primary finding is the mass linking behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/3096095099094094/The-Big-Questions-Ethics-by-Julian-Baggini.pdf
    • http://loaminoo.linkpc.net/4093099090094095/Atheism-A-Very-Short-Introduction-by-Julian-Baggini.pdf
    • http://loaminoo.linkpc.net/8090096094099095/The-Pig-That-Wants-to-Be-Eaten-100-Experiments-for-the-Armchair-Philosopher-by-Julian-Baggini.pdf
    • http://loaminoo.linkpc.net/8098094098095093/History-s-Trickiest-Questions-450-Questions-That-Will-Stump-Amuse-and-Surprise-by-Paul-Kuttner.pdf
    • http://loaminoo.linkpc.net/4098096099098093/Evolution-and-Ethics-T-H-Huxley-s-Evolution-and-Ethics-with-New-Essays-on-Its-Victorian-and-Sociobiological-Context-by-James-Paradis.pdf
    • http://loaminoo.linkpc.net/8090096095092091/Julian-amp-Lia-The-Julian-Series-1-by-Maria-Monroe.pdf
    • http://loaminoo.linkpc.net/5092098096091093/Touch-the-Earth-A-Julian-Lennon-White-Feather-Flier-Adventure-1-by-Julian-Lennon.pdf
    • http://loaminoo.linkpc.net/8090096092093093/Questions-Questions-by-Marcus-Pfister.pdf
    • http://loaminoo.linkpc.net/7098098099090096/All-the-Wrong-Questions-A-Complete-Mystery-Gift-Set-All-the-Wrong-Questions-1-4-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/5099096092090098/On-Ethics-and-Economics-by-Amartya-Sen.pdf
    • http://loaminoo.linkpc.net/1091095096093097097/The-Metaphysic-of-Ethics-by-Immanuel-Kant.pdf
    • http://loaminoo.linkpc.net/6093096096098/Ethics-for-the-New-Millennium-by-Dalai-Lama-XIV.pdf
    • http://loaminoo.linkpc.net/5091096093097092/Sex-Ethics-and-Communication-by-Valerie-V-Peterson.pdf
    • http://loaminoo.linkpc.net/6099091094092097/Letters-on-Ethics-To-Lucilius-by-Seneca.pdf
    • http://loaminoo.linkpc.net/3098095098090091/The-Greening-of-Ethics-by-David-Bennett.pdf
    • http://loaminoo.linkpc.net/9092096096091094/Ethics-in-Context-by-Gernot-B-hme.pdf
    • http://loaminoo.linkpc.net/1090098098098095093/Basic-Ethics-by-Michael-Boylan.pdf
    • http://loaminoo.linkpc.net/8090090092095095/The-Doctrine-of-the-Mean-amp-The-Ethics-of-Confusius-by-Confucius.pdf
    • http://loaminoo.linkpc.net/5099097092098093/Ethics-after-Babel-by-Jeffrey-L-Stout.pdf
    • http://loaminoo.linkpc.net/9099092090097099/Exploring-Ethics-by-Donald-M-Borchert.pdf

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