Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8758eb346f1e2c2…

MALICIOUS

PDF

20.6 KB Created: 2019-04-30 04:31:40 +01:00 Authoring application: mPDF 5.7
MD5: ac9608a97ec2c6933bd1493d9b4d1bb6 SHA-1: 86222fd3dc0dca71ea8f011630324dde70fc3728 SHA-256: e8758eb346f1e2c2979a8bb0fdd85c60ab23b19a5981f621f79bb0cc0880bf23
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier strongly indicated maliciousness. While the specific URLs are currently marked as benign, the sheer volume and structure suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/1098099090098098/Where-the-Wild-Winds-Are-Walking-Europe-s-Winds-from-the-Pennines-to-Provence-by-Nick-Hunt.pdf
    • http://loaminoo.linkpc.net/8096095095094/Winds-of-Change-Valdemar-Mage-Winds-2-by-Mercedes-Lackey.pdf
    • http://loaminoo.linkpc.net/4097096095099/Winds-of-Fate-Valdemar-Mage-Winds-1-by-Mercedes-Lackey.pdf
    • http://loaminoo.linkpc.net/9097093094094094/Winds-Ocean-Currents-and-Ice-Periods-Explanatory-Chapters-Concerning-Winds-Ocean-Currents-and-Frigid-Eras-by-Charles-Austin-Mendell-Taber.pdf
    • http://loaminoo.linkpc.net/1090090095093096091/Pity-Is-Not-Enough-by-Josephine-Herbst.pdf
    • http://loaminoo.linkpc.net/1095092092093098/White-Hell-of-Pity-by-Norah-Lofts.pdf
    • http://loaminoo.linkpc.net/9099092093090/The-Pity-of-War-Explaining-World-War-I-by-Niall-Ferguson.pdf
    • http://loaminoo.linkpc.net/5098097095097096/The-Book-of-Pity-amp-of-Death-by-Pierre-Loti.pdf
    • http://loaminoo.linkpc.net/3097095095093099/Pity-the-Nation-The-Abduction-of-Lebanon-by-Robert-Fisk.pdf
    • http://loaminoo.linkpc.net/9090098093095091/A-Bigger-World-Yet-Faith-Brotherhood-and-Same-Sex-Needs-by-Tim-Timmerman.pdf
    • http://loaminoo.linkpc.net/9090098092090091/Hood-Trailblazer-of-the-Genomics-Age-by-Luke-Timmerman.pdf
    • http://loaminoo.linkpc.net/9090098093098092/You-Reap-What-You-Sow-The-Amanda-Timmerman-Mystery-Series-by-Marty-Ackerman.pdf
    • http://loaminoo.linkpc.net/9090098093094095/Dark-Forces-The-Truth-About-What-Happened-in-Benghazi-by-Kenneth-R-Timmerman.pdf
    • http://loaminoo.linkpc.net/9090098092090092/Mighty-Jack-Climbs-Mount-Everest-by-Jason-Timmerman.pdf
    • http://loaminoo.linkpc.net/9090098093094090/The-Everything-Word-Search-Book-Over-250-Puzzles-to-Keep-You-Entertained-for-Hours-by-Charles-Timmerman.pdf
    • http://loaminoo.linkpc.net/9090098093094091/Shadow-Warriors-The-Untold-Story-of-Who-Is-Really-Subverting-America-s-War-on-Terror-by-Kenneth-R-Timmerman.pdf
    • http://loaminoo.linkpc.net/9090098094094098/Where-Am-I-Giving-A-Global-Adventure-Exploring-How-to-Use-Your-Gifts-and-Talents-to-Make-a-Difference-by-Kelsey-Timmerman.pdf
    • http://loaminoo.linkpc.net/9090098094096091/The-Everything-Travel-Word-Search-Book-Around-the-world-in-150-non-stop-high-flying-action-packed-puzzles-by-Charles-Timmerman.pdf
    • http://loaminoo.linkpc.net/1090097092097097092/Robin-Wayeldt-Ein-schreckliches-Erbe-Robin-Wayeldt-Krimi-2-by-Robin-Wayeldt.pdf
    • http://loaminoo.linkpc.net/1096094093093097/The-Winds-of-Altair-by-Ben-Bova.pdf
    • http://loaminoo.linkpc.net/5098097095097096/The-Book-of-Pity-