Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7506a64828c1f66…

MALICIOUS

PDF

26.4 KB Created: 2019-04-29 23:06:47 +01:00 Authoring application: mPDF 5.7
MD5: 07d7cf2af3c4e8533ee495313336e4bd SHA-1: 6109d036280655921dc3921e2a463dc142febbe4 SHA-256: a7506a64828c1f66a16a711b5b9c0deb3e90edf615d61fe646104dd37990e68f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded URLs, as indicated by the PDF_SEO_LINK_FARM heuristic. While many of these URLs were flagged as benign, the sheer volume and the nature of the heuristic suggest an attempt to manipulate search engine results or redirect users to potentially malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample, limiting further analysis of its behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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/1090095093099098093/Betrachtungen-zum-Zeitgeschehen-Betrachtungen-Reden-Aphorismen-1-by-Franz-Werfel.pdf
    • http://loaminoo.linkpc.net/8099098098092097/Liebste-Freundin-und-Alma-Briefwechsel-mit-Alma-Mahler-Werfel-Nebst-einigen-Briefen-an-Franz-Werfel-erg-nzt-durch-zwei-Aufs-tze-Friedrich-Torbergs-Vorwort-von-David-Axmann-by-Friedrich-Torberg.pdf
    • http://loaminoo.linkpc.net/1090095094091094097/Theoretische-Betrachtungen-Kreditfinanzierter-Fiskalpolitik-by-Klaus-Holst.pdf
    • http://loaminoo.linkpc.net/8091096096093090/Betrachtungen-Zum-Skaz-Bei-N-S-Leskov-Und-Dragoslav-Mihailovic-by-Robert-Hodel.pdf
    • http://loaminoo.linkpc.net/8096091096093095/1865-2015-150-Jahre-Wiener-Ringstra-e-Dreizehn-Betrachtungen-by-Sibylle-Berg.pdf
    • http://loaminoo.linkpc.net/9093090093090098/Freies-Christenthum-Dargelegt-in-Predigten-Und-Betrachtungen-Protestantischer-Geistlicher-by-Conrad-Wilhelm-Kambli.pdf
    • http://loaminoo.linkpc.net/1090096091097091097/Betrachtungen-Uber-Die-Jungsten-Ereignisse-in-Italien-Mit-Bezug-Auf-Osterreichs-Zukunft-by-Joseph-Puffer.pdf
    • http://loaminoo.linkpc.net/1090092094095098093/Das-Gegenteil-von-links-ist-nicht-rechts-sondern-frei---Betrachtungen-zu-einigen-Feinden-der-Freiheit-by-Wolfgang-Halder.pdf
    • http://loaminoo.linkpc.net/8096091091098092/Gr-ndung-und-Untergang-von-Staaten-und-Kulturen-durch-Mythen-und-deren-Fehlen-Weltgeschichtliche-Betrachtungen-by-J-rgen-Bellers.pdf
    • http://loaminoo.linkpc.net/1091093098091090091/Zur-Problematik-Des-Wertens-Und-Beurteilens-Im-Sportunterricht-Vergl-Betrachtungen-U-Analyse-Bestimmender-Faktoren-Dargest-an-D-Disziplin-Leichtathletik-by-Ursula-Manthey.pdf
    • http://loaminoo.linkpc.net/1093096097099093/The-Song-of-Bernadette-by-Franz-Werfel.pdf
    • http://loaminoo.linkpc.net/1091092098091090090/-quot-Wie-man-in-Berlin-so-lebt-quot-Beobachtungen-und-Betrachtungen-aus-der-Hauptstadt-by-Theodor-Fontane.pdf
    • http://loaminoo.linkpc.net/7093092091093097/The-Metamorphosis-by-Franz-Kafka-Annotated-and-Translated-Edition-Die-Verwandlung-Franz-Kafka-Collection-Book-1-by-Franz-Kafka.pdf
    • http://loaminoo.linkpc.net/9098095090094094/Anna-Und-Franz-Sechzehn-Arabesken-by-Franz-Josef-Czernin.pdf
    • http://loaminoo.linkpc.net/8098093096097096/Alma-Mahler-Werfel-Muse-Gattin-Witwe-by-Susanne-Rode-Breymann.pdf
    • http://loaminoo.linkpc.net/6092092097092090/The-Castle-The-Definitive-Edition-by-Franz-Kafka-with-an-Homage-by-Thomas-Mann-Second-Printing-1974-published-by-Schocken-Books-N-Y-by-Franz-Kafka.pdf
    • http://loaminoo.linkpc.net/6090092096095/The-Metamorphosis-In-the-Penal-Colony-and-Other-Stories-The-Great-Short-Works-of-Franz-Kafka-by-Franz-Kafka.pdf
    • http://loaminoo.linkpc.net/9099093098099094/Risikokommunikation-in-Politischen-Reden-by-Norman-Jentsch.pdf
    • http://loaminoo.linkpc.net/1090095094098095091/Metamorphosis-The-original-story-by-Franz-Kafka-as-well-as-important-analysis-by-Franz-Kafka.pdf
    • http://loaminoo.linkpc.net/8096099093093090/Reden-an-die-Abiturienten-1999-2015-by-Wilhelm-Genazino.pdf
    • http://loaminoo.linkpc.net/8096091096093095/1865-2015-150-Jahre-Wiener-Ringstra-e-D

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