Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4bb9167cb66889…

MALICIOUS

PDF

24.8 KB Created: 2019-05-01 18:51:40 +01:00 Authoring application: mPDF 5.7
MD5: b92d5a8670747522ba49d1a78b9fe4c2 SHA-1: 1f1c3d3c5128ee2c5364266882304a62c5d9a68b SHA-256: 3e4bb9167cb66889f6d9fbe72f7c4bf3587b61615fab210bc0fd4c05c28a5981
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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/7097090095094093/Sextus-Empiricus-and-Greek-Scepticism-A-Thesis-Accepted-for-the-Degree-of-Doctor-of-Philosophy-in-the-University-of-Bern-Switzerland-November-1897-by-Mary-Mills-Patrick.pdf
    • http://loaminoo.linkpc.net/5095097092095096/Sextus-Empiricus-and-Greek-Scepticism---Scholar-s-Choice-Edition-by-Mary-Mills-Patrick.pdf
    • http://loaminoo.linkpc.net/5095097092095093/Sextus-Empiricus-and-Greek-Scepticism---Scholar-s-Choice-Edition-by-Mary-Mills-Patrick.pdf
    • http://loaminoo.linkpc.net/7099098090094094/The-First-Deslandres-Group-of-the-Positive-Band-Spectrum-of-Nitrogen-Under-High-Dispersion-A-Thesis-Submitted-for-the-Degree-of-Doctor-of-Philosophy-by-Raymond-T-Birge.pdf
    • http://loaminoo.linkpc.net/7097090093097091/Ancient-Roman-Physicians-Galen-Marcellus-Empiricus-Medical-Community-of-Ancient-Rome-Sextus-Empiricus-Ancient-Greek-Medicine-by-Source-Wikipedia.pdf
    • http://loaminoo.linkpc.net/5095097090093093/Sextus-Empiricus-Against-the-Professors-Loeb-Classical-Library-No-382-by-Sextus-Empiricus.pdf
    • http://loaminoo.linkpc.net/5095097090096091/Sextus-Empiricus-Against-the-Physicists-by-Sextus-Empiricus.pdf
    • http://loaminoo.linkpc.net/5095097091091097/Against-the-Musicians-by-Sextus-Empiricus.pdf
    • http://loaminoo.linkpc.net/5095097090093090/Against-the-Logicians-by-Sextus-Empiricus.pdf
    • http://loaminoo.linkpc.net/5095097090097091/Sextus-Empiricus-Against-the-Logicians-by-Richard-Bett.pdf
    • http://loaminoo.linkpc.net/1090091094093093/Self-University-The-Price-of-Tuition-Is-the-Desire-to-Learn-Your-Degree-Is-a-Better-Life-by-Charles-D-Hayes.pdf
    • http://loaminoo.linkpc.net/1090099092091098092/Computational-Geometry---Methods-Algorithms-and-Applications-International-Workshop-on-Computational-Geometry-CG-91-Bern-Switzerland-March-21-22-1991-Proceedings-by-Hanspeter-Bieri.pdf
    • http://loaminoo.linkpc.net/5095097091099099/Thales-to-Sextus-An-Introduction-to-Ancient-Philosophy-by-Garrett-Thomson.pdf
    • http://loaminoo.linkpc.net/5096096093094096/Exercises-in-Dedication-of-George-Finley-Bovard-Administration-Auditorium-Hoose-Hall-of-Philosophy-and-Stowell-Hall-of-Education-University-of-Southern-California-by-University-of-Southern-California.pdf
    • http://loaminoo.linkpc.net/5093099098094095/17n-s-Philosophy-of-Terror-An-Analysis-of-the-17-November-Revolutionary-Organization-by-Joanne-K-Lekea.pdf
    • http://loaminoo.linkpc.net/1090097098099099098/Greek-Philosophy-Thales-to-Aristotle-by-Reginald-E-Allen.pdf
    • http://loaminoo.linkpc.net/1090097099090090098/Greek-Philosophy-From-Thales-to-the-Cynics-by-John--Marshall.pdf
    • http://loaminoo.linkpc.net/1090097099090096093/Greek-Philosophy-Part-1-Thales-to-Plato-by-John-Burnet.pdf
    • http://loaminoo.linkpc.net/3099097092099098/Readings-in-Ancient-Greek-Philosophy-From-Thales-to-Aristotle-by-C-D-C-Reeve.pdf
    • http://loaminoo.linkpc.net/4099090098092095/The-Greek-s-Pregnant-Lover-Traditional-Greek-Husbands-2-Greek-Tycoons-7-by-Lucy-Monroe.pdf

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