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=solution-to-control-air-pollution.pdf In PDF document text

  • http://uncpbisdegree.com/download4.php?q=solution-to-control-air-pollution.pdfIn PDF document text
  • http://www.gcesystems.com/air-pollution-control.htmlIn PDF document text
  • http://www.ergapc.co.uk/In PDF document text
  • http://www.ripublication.com/ijeem_spl/ijeemv4n5_06.pdfIn PDF document text
  • http://ospcboard.org/In PDF document text
  • http://www.nutramed.com/environment/carsepa.htmIn PDF document text
  • http://met.net/In PDF document text
  • http://www.valleyair.org/AirAlert/AirAlert_Landing.htmIn PDF document text
  • http://www.oxidizerservice.com/In PDF document text
  • http://www.environmental-protection.org.uk/policy-areas/air-quality/air-pollution-law-and-policy/air-pollution-laws/In PDF document text
  • http://qualitycontrolairfl.com/In PDF document text
  • http://filtaire.com.au/In PDF document text
  • http://www.mpcb.gov.in/consentmgt/waterairact.phpIn PDF document text
  • http://www.pcpconline.com/In PDF document text
  • http://mpcb.gov.in/In PDF document text
  • http://nrmurphy.com/dustcollectors.htmlIn PDF document text
  • http://www.ergapc.co.uk/precious-metal-recovery.htmlIn PDF document text
  • https://circuitdigest.com/microcontroller-projects/iot-air-pollution-monitoring-using-arduinoIn PDF document text
  • http://riverside-resort.net/1/u-s-army-cadet-command-the-10-year-history.pdfIn PDF document text
  • http://riverside-resort.net/1/six-minute-solutions-resources-environmental-problems.pdfIn PDF document text
  • http://riverside-resort.net/1/turn-a-word-document-into-a.pdfIn PDF document text
  • http://riverside-resort.net/1/the-difference-between-meteors-meteorites-and-meteoroids.pdfIn PDF document text
  • http://riverside-resort.net/1/the-second-i-saw-you-the-true-love-story-of-rupert-brooke.pdfIn PDF document text
  • http://riverside-resort.net/1/twilights-last-gleaming-the-karnac-library.pdfIn PDF document text
  • http://riverside-resort.net/1/tomorrows-lawyers-an-introduction-to-your-future-richard-susskind.pdfIn PDF document text
  • http://riverside-resort.net/1/shl-verbal-numerical-reasoning-test-answers.pdfIn PDF document text
  • http://riverside-resort.net/1/stage-4-brain-cancer-final-stages.pdfIn PDF document text
  • http://riverside-resort.net/1/thomas-joseph-daily-crossword-answers.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://en.wikipedia.org/wiki/Pollution_in_ChinaIn PDF document text
  • https://www.explainthatstuff.com/air-pollution-introduction.htmlIn PDF document text
  • https://www.explainthatstuff.com/articles_environment.htmlIn PDF document text
  • https://en.wikipedia.org/wiki/Indoor_air_pollution_in_developing_nationsIn PDF document text
  • http://epdfiles.engr.wisc.edu/pdf_web_files/tic/bulletins/Bltn_013_DustControl.pdfIn PDF document text
  • http://www.eco-business.com/opinion/air-pollution-the-business-concern/In PDF document text
  • https://www.iqair.com/In 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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