Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee71e55d96f081e…

MALICIOUS

PDF

20.3 KB Created: 2019-05-01 20:24:40 +01:00 Authoring application: mPDF 5.7
MD5: 1c9da866ee5a72cd05ca1f8d3f979272 SHA-1: f6eabfde1dfb181c8f80cc0c0f45e2d9e69636e1 SHA-256: 3ee71e55d96f081e9fd4f7af9c1af06b2ad30404e61f46339e015384c91e29ac
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. While many of these links point to benign-looking book titles, the sheer volume and the ML_NYX_PDF_MALICIOUS classification suggest a malicious intent, possibly for SEO manipulation or to distribute malware. The embedded URLs are the primary IOCs. No scripts were extracted from this sample.

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
    • http://loaminoo.linkpc.net/9096099093098096/An-introduction-to-animal-behavior-Ethology-s-first-century-Prentice-Hall-biological-science-series-by-Peter-H-Klopfer.pdf
    • http://loaminoo.linkpc.net/7097098099098091/Laplace-Transforms-Programmes-and-Problems-by-K-A-Stroud.pdf
    • http://loaminoo.linkpc.net/7097098099097094/Schaum-s-Outline-of-Laplace-Transforms-by-Murray-R-Spiegel.pdf
    • http://loaminoo.linkpc.net/7097099090097098/The-Essentials-of-Laplace-Transforms-by-Morteza-Shafii-Mousavi.pdf
    • http://loaminoo.linkpc.net/7097099092098096/Vectorvalued-Laplace-Transforms-and-Cauchy-Problems-by-Wolfgang-Arendt.pdf
    • http://loaminoo.linkpc.net/1091098091093099090/Delfines-by-Prentice-Hall-Pearson.pdf
    • http://loaminoo.linkpc.net/8095091096098091/Prentice-Hall-Grammar-and-Composition-4-by-Gary-Forlini.pdf
    • http://loaminoo.linkpc.net/7097099092093093/An-Introduction-to-the-Laplace-Transformation-by-Jaeger-J-C.pdf
    • http://loaminoo.linkpc.net/1090093091099092099/Treffpunkt-Deutsch-Grundstufe-amp-1key-CC-Pkg-by-Prentice-Hall-Pearson.pdf
    • http://loaminoo.linkpc.net/7091091096098090/CENTER-FOR-MATHEMATICS-EDUCATION-ALGEBRA-1-TEACHER-EXPRES-CD-ROM-by-Prentice-Hall.pdf
    • http://loaminoo.linkpc.net/5096090093095093/Amer-Peo-Creatg-V2-Vango-amp-carng-amp-e-Rsvlt-amp-mhk-by-Prentice-Hall-Pearson.pdf
    • http://loaminoo.linkpc.net/1090093091099094092/Treffpunkt-Deutsch-Gru-amp-actv-amp-dvd-amp-gramm-amp-dict-by-Prentice-Hall-Pearson.pdf
    • http://loaminoo.linkpc.net/6093091095091093/Kozier-amp-Erbs-Fundmt-Nursing-amp-clin-amp-skill-Pkg-by-Prentice-Hall-Pearson.pdf
    • http://loaminoo.linkpc.net/7097099092099093/Differential-Equations-with-Introduction-to-Laplace-Transform-by-Apurba-Narayan-Das.pdf
    • http://loaminoo.linkpc.net/1091091093094092095/Integrated-Digital-Electronics-Prentice-Hall-series-in-electronic-technology-by-Walter-A-Treibel.pdf
    • http://loaminoo.linkpc.net/1090092094098094096/DNA-Complex-and-Adaptive-Behaviour-Prentice-Hall-series-in-experimental-psychology-by-John-Gaito.pdf
    • http://loaminoo.linkpc.net/1091093097096094090/Algorithms-Plus-Data-Structures-Equals-Programs-Prentice-Hall-series-in-automatic-computation-by-Niklaus-Wirth.pdf
    • http://loaminoo.linkpc.net/2095096090097093/Here-Be-Dragons-How-the-Study-of-Animal-and-Plant-Distributions-Revolutionized-Our-Views-of-Life-and-Earth-by-Dennis-McCarthy.pdf
    • http://loaminoo.linkpc.net/8099094096091/Gad-s-Hall-The-Haunting-of-Gad-s-Hall-Gad-s-Hall-1-2-by-Norah-Lofts.pdf
    • http://loaminoo.linkpc.net/7096096095098/The-Digital-Turn-How-the-Internet-Transforms-Our-Existence-by-Wim-Westera.pdf