Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f2efc2af56a6d8b…

MALICIOUS

PDF

15.1 KB Created: 2019-05-01 18:06:12 +01:00 Authoring application: mPDF 5.7
MD5: 316489a73828e88e9cd5ca3e60ff3cdf SHA-1: c56971523ece787dd0a42e6e7d653cf2ad6c42c6 SHA-256: 3f2efc2af56a6d8bac3daf2868b02f2cdc8b23eaf770f5af2aff53cfa33e268f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded URLs, identified as a link farm. While most of the linked PDFs appear benign, the sheer volume and the heuristic firing of PDF_SEO_LINK_FARM indicate a malicious intent, likely to manipulate search engine results or to serve as a distribution point for further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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/6092091090099093/Science-of-Education-PT-Iib-Chapters-10-12-The-Awareness-of-Mathematization-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092090099092094/Notes-on-the-Gattegno-Approach-to-Math-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/9096097093093/Key-to-Awareness-by-Keerthana-R-.pdf
    • http://loaminoo.linkpc.net/6092091091090097/Eight-Tales-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090099099/The-Adolescent-and-His-Will-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090094097/Can-I-Be-Creative-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090095090/On-Being-Freer-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/4093094098099/Awareness-The-Key-to-Living-in-Balance-by-Osho.pdf
    • http://loaminoo.linkpc.net/6092091090093096/Evolution-and-Memory-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092091090095092/A-Thousand-Sentences-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092090099096099/Short-Passages-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/3092091091090090/Awareness-Being-Fully-Alive-by-Robert-S-Cosmar.pdf
    • http://loaminoo.linkpc.net/6092091090093097/Algebricks-Exercise-Workbooks-1-6-Set-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/4092091095097/Voyager-The-Art-of-Pure-Awareness-by-Robin-Craig-Clark.pdf
    • http://loaminoo.linkpc.net/1091098097098092098/Biz-World-The-Complete-Business-awareness-Guide-by-Hande.pdf
    • http://loaminoo.linkpc.net/7093098091090092/Wonderful-You-Self-Awareness-Accepting-and-Knowing-Myself-by-Betty-Gouge.pdf
    • http://loaminoo.linkpc.net/6092091091091092/Mathematics-with-Numbers-in-Colour-Book-VI-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/6092090099093096/Towards-a-Visual-Culture-Educating-Through-Television-by-Caleb-Gattegno.pdf
    • http://loaminoo.linkpc.net/1091099091090096093/By-Way-of-the-Personal-Path-The-Continuing-Journey-Into-Self-Awareness-by-Eliott-James.pdf
    • http://loaminoo.linkpc.net/6092091090093097/Algebricks-Exercise-Workbooks-1-6-Set-by-Cale

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