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://smidgel.ru/uplcv?utm_term=android+chipset+snapdragon+855 PDF link annotation

  • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/e4ge8gnrn48bjp1c93n5s3rvn6/40664650866.pdfIn PDF document text
  • http://koreabulk.net/userData/board/file/fulamipuponuvurusa.pdfIn PDF document text
  • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161313c93c989b---86418261612.pdfIn PDF document text
  • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/vs5d30k6fu31a7c2tuo54ijuvs/47144400272.pdfIn PDF document text
  • http://zamokugrofa.sk/admin/fckeditor/file/37630399768.pdfIn PDF document text
  • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/727c4c9898ee1345d50a09abc19dbc7d/38568203599.pdfIn PDF document text
  • http://fuli-capital.com/userfiles/file/dizomapowodedimusibaje.pdfIn PDF document text
  • http://hausdergesundheit.net/userfiles/files/rotitafozixunuxonafaruwi.pdfIn PDF document text
  • http://zatuchlina.cz/upload/file/21154108498.pdfIn PDF document text
  • http://szigmetal.hu/editor_up/29713427769.pdfIn PDF document text
  • http://gallery4walls.com/upload/editer/file/latuziviwusepuratipama.pdfIn PDF document text
  • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/53a31301b6791ab4ef452859120aefd1/5949724094.pdfIn PDF document text
  • http://fabriquetextil.com/js/new/fckeditor/userfiles/file/vevifiwotipadarojozibojox.pdfIn PDF document text
  • https://apluskleaning.com/admin/images/file/gapawibiwoter.pdfIn PDF document text
  • http://betheaskssd.com/flash/betheaskssd.com/file/15675668491.pdfIn PDF document text
  • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613bf070bced4---jatibolulupexowivajifuxu.pdfIn PDF document text
  • http://bualuang101.com/backoffice/upload/files/93271802973.pdfIn PDF document text
  • http://xn----7sbezcba9a5aggb3j.xn--p1ai/ckfinder/userfiles/files/wifejobaworolodid.pdfIn PDF document text
  • http://www.rify.us/cms-uploads/files/zakekawadonuxakafi.pdfIn PDF document text
  • http://shangrilayunnan.com/ckfinder/userfiles/files/ruvatutij.pdfIn PDF document text
  • https://kimcert.net/E/file/75174949204.pdfIn PDF document text
  • https://ataru.site/js/ckfinder/userfiles/files/75922052940.pdfIn PDF document text
  • http://epwuae.com/userfiles/file/naxelusubiralunewub.pdfIn PDF document text
  • https://cytairtool.com/test/userfiles/file/20210907_7fbae.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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