Malicious PDF — malware analysis report

Static analysis result for SHA-256 a07803091a95856c…

MALICIOUS

PDF

25.3 KB Created: 2020-03-14 00:16:25 +00:00 Authoring application: mPDF 5.7 First seen: 2021-10-23
MD5: 30bb1664190a6ba69b75872d3ee652dc SHA-1: f8eed28dfc6b7191823e8b2178d50f07c2edcda1 SHA-256: a07803091a95856c8c85bc86174499333807b7e329046eca7c14f0d98df9d477
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs pointing to a single suspicious domain, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The embedded URLs are likely used to redirect users to malicious content or to engage in SEO poisoning tactics. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9716

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://ieuicufioao.myhome.cx/1551557558553558555/The-New-Turing-Omnibus-66-Excursions-In-Computer-Science-by-A-K-Dewdney.pdf In PDF document text
    • http://ieuicufioao.myhome.cx/1550553550558555554/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.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/4558556550552550/The-Planiverse-Computer-Contact-with-a-Two-Dimensional-World-by-A-K-Dewdney.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/4558558550559554/The-Man-Who-Knew-Too-Much-Alan-Turing-and-the-Invention-of-the-Computer-by-David-Leavitt.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/2559552553552552/The-Man-Who-Knew-Too-Much-Alan-Turing-and-the-Invention-of-the-Computer-by-David-Leavitt.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/7551559556557550/The-Universal-Computer-The-Road-from-Leibniz-to-Turing-by-Martin-D-Davis.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/5553551552552553/Mathematics-for-Computer-Science-by-Eric-Lehman.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/6551553556556559/Multiple-Choice-Questions-in-Computer-Science-by-Ela-Kumar.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/9556554554550550/Computer-Science-Programming-Basics-in-Ruby-by-Ophir-Frieder.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/1551551557558550554/Software-Engineering-International-Computer-Science-Series-by-Ian-Sommerville.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/1550553556553557550/Applications-of-Geometric-Algebra-in-Computer-Science-and-Engineering-by-Leo-Dorst.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/8555552555555558/Applied-Discrete-Structures-For-Computer-Science-by-Alan-Doerr.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/2555555556553556/Algorithms-To-Live-By-The-Computer-Science-of-Human-Decisions-by-Brian-Christian.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/4554557554554552/Algorithms-to-Live-By-The-Computer-Science-of-Human-Decisions-by-Brian-Christian.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/1550551550554557559/AP-Computer-Science-37-Java-Exception-Handling-Tutorial-by-Anila-Rekha-Jagannatham.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/1551553557556555555/Digital-Circuit-Design-for-Computer-Science-Students-An-Introductory-Textbook-by-Niklaus-Wirth.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/1551558553550558553/A-Science-Fiction-Omnibus-by-Brian-W-Aldiss.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/9553556553557552/The-Penguin-World-Omnibus-of-Science-Fiction-by-Brian-W-Aldiss.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/9556558555559558/Advances-in-Databases-and-Information-Systems-Third-East-European-Conference-ADBIS-99-Maribor-Slovenia-September-13-16-1999-Proceedings-Lecture-Notes-in-Computer-Science-by-Johann-Eder.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/1550552557553551558/The-History-of-the-Computer-PC-Peter-s-Computer-Classroom-Book-6-by-Anneline-Kinnear.pdfIn PDF document text

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