Malicious PDF — malware analysis report

Static analysis result for SHA-256 50950f211c4bcebe…

MALICIOUS

PDF

40.7 KB Created: 2019-04-10 12:10:07 +03:00 Authoring application: calibre 0.9.31 [http://calibre-ebook.com]
MD5: 6041892b6f3dfd51395d1d30a668c4fb SHA-1: ec30209a4db083525ac484af12e14b8059315e23 SHA-256: 50950f211c4bcebe959ddd0a0eaa0f70309ba1825938a157c7113672dbec4d90
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The embedded links likely serve to redirect users to potentially malicious content or for SEO manipulation purposes. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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://www.gorillawalker.com/c-paul-herfurth-violin-piano-a-collection-of-43-famous.pdf
    • http://www.gorillawalker.com/rewrites-a-memoir.pdf
    • http://www.gorillawalker.com/paranoia-the-psychology-of-persecutory-delusions-maudsley-series.pdf
    • http://www.gorillawalker.com/the-old-indian-move-by-move.pdf
    • http://www.gorillawalker.com/antitrust-law-answer-book-2012-13.pdf
    • http://www.gorillawalker.com/the-buddhist-third-class-junkmail-oracle-the-art-and-poetry.pdf
    • http://www.gorillawalker.com/lady-audley-s-secret-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/nobel-prizes-and-nature-s-surprises.pdf
    • http://www.gorillawalker.com/fetish-recognition-revolution.pdf
    • http://www.gorillawalker.com/2013-icd-9-cm-for-hospitals-volumes-1-2-and.pdf
    • http://www.gorillawalker.com/a-journey-to-nowhere.pdf
    • http://www.gorillawalker.com/lana-del-rey-ultraviolence.pdf
    • http://www.gorillawalker.com/monograph-on-the-lias-ammonites-of-the-british-islands-volume.pdf
    • http://www.gorillawalker.com/prince-of-tricks.pdf
    • http://www.gorillawalker.com/when-is-a-planet-not-a-planet-the-story-of.pdf
    • http://www.gorillawalker.com/nerderotica-iv-gender-transformation-feminization-erotica.pdf
    • http://www.gorillawalker.com/hand-lettering-for-everyone-a-creative-workbook.pdf
    • http://www.gorillawalker.com/afrikan-yoga.pdf
    • http://www.gorillawalker.com/pragmatic-psychology.pdf
    • http://www.gorillawalker.com/genetic-identification-of-centropomine-fishes.pdf
    • http://www.gorillawalker.com/the-type-2-diabetes-cure-how-to-naturally-prevent-reverse.pdf
    • http://www.gorillawalker.com/secret-of-the-firm-foundations-12-mystery-stories-to-solve.pdf
    • http://www.gorillawalker.com/the-amazing-book-is-not-on-fire.pdf
    • http://www.gorillawalker.com/dr-tony-attwood-presents-asperger-s-diagnostic-assessment.pdf
    • http://www.gorillawalker.com/math-connects-grade-4-teacher-edition-volume-2.pdf
    • http://www.gorillawalker.com/neurobiology-and-treatment-of-traumatic-dissociation-towards-an-embodied-self.pdf
    • http://www.gorillawalker.com/worked-to-death-working-stiff-mysteries-volume-2.pdf
    • http://www.gorillawalker.com/trailers-how-to-design-and-build.pdf
    • http://www.gorillawalker.com/nagarjuna-the-philosophy-of-the-middle-way-suny-series-in.pdf
    • http://www.gorillawalker.com/the-best-of-johann-strauss-jr-waltzes-for-string-quartet.pdf
    • http://www.gorillawalker.com/career-by-design-communicating-your-way-to-success-4th-edition.pdf
    • http://www.gorillawalker.com/black-lagoon-vol-10.pdf
    • http://www.gorillawalker.com/homemaker-home-health-aide.pdf
    • http://www.gorillawalker.com/the-elegance-of-the-hedgehog-by-muriel-barbery-uk-cover.pdf
    • http://www.gorillawalker.com/pharmacology-for-the-ems-provider.pdf
    • http://www.gorillawalker.com/fifty-shades-of-neigh-a-parody.pdf
    • http://www.gorillawalker.com/100-hikes-in-the-great-smoky-mountains-national-park-second.pdf
    • http://www.gorillawalker.com/flexure-of-telescopes-transactions-of-the-academy-of-science-of.pdf
    • http://www.gorillawalker.com/mine-ventilation-two-volume-set.pdf
    • http://www.gorillawalker.com/lonely-planet-pocket-las-vegas-travel-guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://calibre-ebook.com
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/

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