Malicious PDF — malware analysis report

Heuristics 4

• Fake 'free download' SEO-poisoning PDF critical PDF_SEO_FAKE_DOWNLOAD
  The ML classifier flagged this PDF AND it carries a visual download/call-to-action lure AND an off-domain server-side download-gateway link whose query string names a document payload. This three-signal conjunction is the fake-document / 'free PDF download' SEO-poisoning delivery pattern: the page is padded with benign decoy links to dilute classifier scores while funnelling the victim through the gateway to malware/scareware. Acting only on the conjunction keeps benign download-bearing PDFs from being misflagged.
• PDF carries a PHP-gateway SEO-spam PDF link farm medium PDF_SEO_PHP_GATEWAY_LINK_FARM
  PDF contains four or more clickable links whose target is a `.php` gateway with a multi-word search-PHRASE document slug embedded after it (e.g. 'index.php?.../binary+options+trading+nz.pdf' or 'pdf.php/cialis-dosage-side-effects.pdf'). Legitimate PHP-served documents use a filename or numeric id, not a search-query phrase, so this is the generated SEO link-farm shape — pharma / binary-options / 'free download' spam that ranks for queries and routes users into payload/redirect chains. The PDF itself carries no exploit — the risk is the linked destinations.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://uncpbisdegree.com/download3.php?q=the-toplofty-lord-thorpe.pdf In PDF document text

  • http://uncpbisdegree.com/download4.php?q=the-toplofty-lord-thorpe.pdfIn PDF document text
  • http://www.romanzirosa.net/rr-biblio-km2.htmIn PDF document text
  • http://uncpbisdegree.com/1/the-economist-best-cities-to-live-2017.pdfIn PDF document text
  • http://uncpbisdegree.com/1/silver-antibacterial.pdfIn PDF document text
  • http://riverside-resort.net/1/zumdahl-chemistry-9th-edition-solution.pdfIn PDF document text
  • http://uncpbisdegree.com/1/the-eco-chick-guide-to-life-how-to-be-fabulously-green.pdfIn PDF document text
  • http://uncpbisdegree.com/1/story-of-panchatantra-righteousness-leads-to-success.pdfIn PDF document text
  • http://uncpbisdegree.com/1/the-favorite-uncle-remus.pdfIn PDF document text
  • http://riverside-resort.net/1/upload-your-design-business-card.pdfIn PDF document text
  • http://uncpbisdegree.com/1/series-and-parallel-speaker-wiring.pdfIn PDF document text
  • http://riverside-resort.net/1/wirind-diagrams-for-steering-columns.pdfIn PDF document text
  • http://uncpbisdegree.com/1/the-ancient-magus-bride-vol-1.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://go.microsoft.com/fwlink/?LinkId=521839&CLCID=0409In PDF document text
  • http://go.microsoft.com/fwlink/?LinkID=246338&CLCID=0409In PDF document text
  • https://go.microsoft.com/fwlink/?linkid=868922In PDF document text
  • http://go.microsoft.com/fwlink/?LinkID=286759&CLCID=409In PDF document text
  • http://go.microsoft.com/fwlink/?LinkID=617297In PDF document text
  • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

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