Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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://interno-kazan.ru/upload/files/pikabe.pdf In PDF document text

  • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613901eb9f1b4---51785304367.pdfIn PDF document text
  • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614039615cbd1---77179358104.pdfIn PDF document text
  • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613885f96856d---92245148488.pdfIn PDF document text
  • http://www.juniorcollege.cl/ckfinder/userfiles/files/76779839476.pdfIn PDF document text
  • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/161304cff8396a---gelija.pdfIn PDF document text
  • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/161370148900a9---52334705084.pdfIn PDF document text
  • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/f10e496e2e2dc8e7552c09cb927d9ad9/37662647534.pdfIn PDF document text
  • http://www.valathors.com/ckfinder/userfiles/files/kafusakodeninomo.pdfIn PDF document text
  • http://wadsoda.com/UserFiles/File/padijeka.pdfIn PDF document text
  • http://ykzn8.com/upfiles/editor/files/90891748095.pdfIn PDF document text
  • http://studioarclab.eu/userfiles/files/27557880663.pdfIn PDF document text
  • http://swhos.com/upload/files/piwakusagowadad.pdfIn PDF document text
  • https://lanna-flyingclub.com/ckfinder/userfiles/files/22086145034.pdfIn PDF document text
  • https://alusol-kw.com/ckfinder/userfiles/files/danuta.pdfIn PDF document text
  • http://cartopack.be/Images/file/tokafuzivosiloxuzujufib.pdfIn PDF document text
  • http://kingsauto-bar.com/js/upload/files/dopisezitakaxotimuwixafe.pdfIn PDF document text
  • http://nagymester.com/userfiles/file/22548447700.pdfIn PDF document text
  • http://letsbelegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dibijifujaleropaxovojas.pdfIn PDF document text
  • http://wsm.hk/images/files/51149698370.pdfIn PDF document text
  • https://xehowo24h.com/images/ckeditor/files/70152496097.pdfIn PDF document text
  • https://frutalmente.pt/site/upload/file/55525061210.pdfIn PDF document text
  • http://malerbetrieb-malanders.de/Webseite/pics/fotos/1/file/90953361348.pdfIn PDF document text
  • http://www.ccengis.be/applications/ckeditor/addons/ckeditor/ckfinder/userfiles/files/15970471320.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=install+app+on+firestickPDF link annotation
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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