Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• 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 https://laborke.ru/uplcv?utm_term=best+way+to+improve+vocabulary PDF link annotation

  • http://xn--o39a91gvwm83kbsn.net/FileData/ckfinder/files/20210902_5FB7364B44F61B9C.pdfIn PDF document text
  • http://huiking.cn/uploads/file/262044073598.pdfIn PDF document text
  • http://winfielddeli.com/ckfinder/userfiles/files/45850323425.pdfIn PDF document text
  • http://e-pisanie-prac.pl/famprojekt_z_serwera/images/file/84056995062.pdfIn PDF document text
  • http://floridadressyourhome.com/uploaded_files/userfiles/files/74404676093.pdfIn PDF document text
  • https://spvi.cn/filespath/files/20210927025420.pdfIn PDF document text
  • https://www.sensormaticltd.com/app/templates/js/ckfinder/userfiles/files/22844497035.pdfIn PDF document text
  • http://gsmontaggi.it/userfiles/files/13760860908.pdfIn PDF document text
  • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16135c34d68fdb---wusenomim.pdfIn PDF document text
  • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/16158e51996eaf---mawit.pdfIn PDF document text
  • https://highendteen.com/userfiles/files/pilisamusexuxujanusefa.pdfIn PDF document text
  • https://fedico.ca/upload/editor/file/xovewuwozisepopinut.pdfIn PDF document text
  • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c668feef78---gibaleg.pdfIn PDF document text
  • https://triptoboloyfoundation.org/editorsfiles/files/16369460756.pdfIn PDF document text
  • http://5thaveseniors.org/userfiles/file/kewetuperosiwisiziwivu.pdfIn PDF document text
  • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/45a220ecbf9c0ea68ffd845069a53411/98475958997.pdfIn PDF document text
  • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613b747268a87---32762280929.pdfIn PDF document text
  • https://jotekonybakterium.hu/userfiles/files/vejumavidovubifutas.pdfIn PDF document text
  • https://www.ksmt.edu.np/assets/ckfinder/userfiles/files/xevularosomuminusudop.pdfIn PDF document text
  • http://metisentry.net/ckfinder/userfiles/files/xejatozerizegemolagexopun.pdfIn PDF document text
  • https://alpinashop.bg/files/56690775088.pdfIn PDF document text
  • http://mustang.tom.ru/jsplugins/ckfinder/userfiles/files/61332953658.pdfIn PDF document text
  • 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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