Malicious PDF — malware analysis report

Static analysis result for SHA-256 21b3ec745030a682…

MALICIOUS

PDF

19.9 KB Created: 2019-05-02 00:48:48 +01:00 Authoring application: mPDF 5.7
MD5: f5b76271cbe536c5e493eba3bb053b51 SHA-1: c9d91e0cbc095991898d0a886cc71b58379e3140 SHA-256: 21b3ec745030a6825f191715a7763e0c439fbf2c4f84ab01e037b0e3f12c7e2f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the PDF structure and link farm heuristic suggest the primary purpose is to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/5096098099090094/Critique-of-Hegel-s-Philosophy-of-Right-by-Karl-Marx.pdf
    • http://loaminoo.linkpc.net/4096097094095/The-Open-Society-and-Its-Enemies---Volume-Two-Hegel-and-Marx-by-Karl-Popper.pdf
    • http://loaminoo.linkpc.net/7094094090092094/The-Eighteenth-Brumaire-of-Louis-Bonaparte-One-of-Karl-Marx-Most-Profound-and-Most-Brilliant-Monographs-by-Karl-Marx.pdf
    • http://loaminoo.linkpc.net/9090094094093099/Hegel-s-Philosophy-of-Mind-by-Georg-Wilhelm-Friedrich-Hegel.pdf
    • http://loaminoo.linkpc.net/9090094094095090/Hegel-s-Rabble-An-Investigation-into-Hegel-s-Philosophy-of-Right-by-Frank-Ruda.pdf
    • http://loaminoo.linkpc.net/1091091096095098095/Karl-Marx-und-Friedrich-Engels-Manifest-der-Kommunistischen-Partei-Das-quot-Kommunistische-Manifest-quot-in-der-Original-Fassung-von-1848-by-Karl-Marx.pdf
    • http://loaminoo.linkpc.net/6095093094091099/Introduction-to-the-Philosophy-of-History-with-Selections-from-The-Philosophy-of-Right-by-Georg-Wilhelm-Friedrich-Hegel.pdf
    • http://loaminoo.linkpc.net/9090094094093093/Hegel-s-Critique-of-Metaphysics-by-B-atrice-Longuenesse.pdf
    • http://loaminoo.linkpc.net/1091097094099095097/Die-Synthese-von-materialistischer-Geschichtsphilosophie-und-konomischer-Theorie-in-Marx-Fr-hschriften-Das-Elend-der-Philosophie-und-Brief-an-Annenkow-Das-Fr-hwerk-von-Karl-Marx-by-Martin-Gliemann.pdf
    • http://loaminoo.linkpc.net/4093091095097/The-Marx-Engels-Reader-by-Karl-Marx.pdf
    • http://loaminoo.linkpc.net/4095092092098099/The-Philosophy-of-Hegel-by-Allen-Speight.pdf
    • http://loaminoo.linkpc.net/9090094094099099/Philosophy-of-Nature-by-Georg-Wilhelm-Friedrich-Hegel.pdf
    • http://loaminoo.linkpc.net/1090094090093090090/Marx-and-Philosophy-by-W-A-Suchting.pdf
    • http://loaminoo.linkpc.net/5096098098091097/The-Philosophy-of-Marx-by-tienne-Balibar.pdf
    • http://loaminoo.linkpc.net/1090094090093090092/Marx-and-Philosophy-Three-Studies-by-W-a-Suchting.pdf
    • http://loaminoo.linkpc.net/9093097092099098/Kant-s-Critique-of-Pure-Reason-The-Foundation-of-Modern-Philosophy-by-Otfried-H-ffe.pdf
    • http://loaminoo.linkpc.net/6090099099095093/The-Communist-Manifesto-by-Karl-Marx.pdf
    • http://loaminoo.linkpc.net/3099093097093092/The-Communist-Manifesto-by-Karl-Marx.pdf
    • http://loaminoo.linkpc.net/6095099097099096/The-Communist-Manifesto-by-Karl-Marx.pdf
    • http://loaminoo.linkpc.net/5096098098094098/Selected-Writings-by-Karl-Marx.pdf
    • http://loaminoo.linkpc.net/6095

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