Malicious PDF — malware analysis report

Static analysis result for SHA-256 04a0e0efd9375743…

MALICIOUS

PDF

17.1 KB Created: 2019-05-02 01:02:03 +01:00 Authoring application: mPDF 5.7
MD5: bfd960475d4bb81c3cf129347a476bd3 SHA-1: 0e7b7c79f535ee2f8f1101cce8c294fc4938e999 SHA-256: 04a0e0efd93757434a3bd8a60e050dbdd1f623c9e1eb4cdae083fb7196ac0ed9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the URLs themselves are marked as benign, the sheer volume and structure suggest an attempt to manipulate search engine results or distribute content from a controlled domain. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/6092090099092094/Notes-on-the-Gattegno-Approach-to-Math-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090095090/On-Being-Freer-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090094097/Can-I-Be-Creative-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090099099/The-Adolescent-and-His-Will-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091091090097/Eight-Tales-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092090099096099/Short-Passages-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090095092/A-Thousand-Sentences-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090095091/Know-Your-Children-as-They-Are-A-Book-for-Parents-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090093097/Algebricks-Exercise-Workbooks-1-6-Set-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092090099093096/Towards-a-Visual-Culture-Educating-Through-Television-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091091091092/Mathematics-with-Numbers-in-Colour-Book-VI-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090099093/Science-of-Education-PT-Iib-Chapters-10-12-The-Awareness-of-Mathematization-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092090099092098/Teaching-Foreign-Languages-in-Schools-the-Silent-Way-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090094095/Awareness-of-Awareness-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/1095091096095097/The-Legend-of-Caleb-York-Caleb-York-1-by-Mickey-Spillane.pdf
    • http://loaminoo.linkpc.net/9094093096095/Icons-of-Evolution-Science-or-Myth-Why-Much-of-What-We-Teach-About-Evolution-Is-Wrong-by-Jonathan-Wells.pdf
    • http://loaminoo.linkpc.net/4090097095099093/Evolution-Z-Stufe-Zwei-Evolution-Z---Zombie-Apokalypse-2-by-David-Bourne.pdf
    • http://loaminoo.linkpc.net/4094098093093097/Refuting-Evolution-A-Handbook-for-Students-Parents-and-Teachers-Countering-the-Latest-Arguments-for-Evolution-by-Jonathan-Sarfati.pdf
    • http://loaminoo.linkpc.net/3091095091096094/Demon-Evolution-The-Evolution-Trilogy-2-by-David-Estes.pdf
    • http://loaminoo.linkpc.net/2098091094096092/Archangel-Evolution-The-Evolution-Trilogy-3-by-David-Estes.pdf

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