Malicious PDF — malware analysis report

Heuristics 6

• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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.
• 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://biosurfest.com/userfiles/files/gelapuzolefod.pdf In PDF document text

  • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/b6a2c826b311e3c0f632161db3cca9d3/taxirovimagadodad.pdfIn PDF document text
  • http://traslochimontalto.it/userfiles/files/pajolapufexarir.pdfIn PDF document text
  • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/f458ca70122a3490ca0ea346ea6a83c0/xejififobizuk.pdfIn PDF document text
  • http://cbestdesign.com/ckfinder/images_store/files/magop.pdfIn PDF document text
  • http://astro2sphere.com/admin/images/file/36407656707.pdfIn PDF document text
  • https://sunarchegypt.com/userfiles/file/94868066722.pdfIn PDF document text
  • https://hoangphatdanang.com/uploads/image/files/53335244443.pdfIn PDF document text
  • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9a29228741---65839309207.pdfIn PDF document text
  • https://sanipro.ma/app/webroot/uploaderfiles/62811275330.pdfIn PDF document text
  • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/74c6ocn9v6k8c8vjetkko1c4n5/98838943873.pdfIn PDF document text
  • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609fec4e70343---35011147933.pdfIn PDF document text
  • https://biocoop.legreniervert.fr/ckfinder/userfiles/files/98842786427.pdfIn PDF document text
  • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8d6acb041---28099232495.pdfIn PDF document text
  • https://ijaetis.org/ckfinder/userfiles/files/sufabixirebipimukuzunaza.pdfIn PDF document text
  • https://maconlux.lu/userfiles/files/78049067029.pdfIn PDF document text
  • http://faceconnects.com/ci/userfiles/files/33654985955.pdfIn PDF document text
  • http://yangpupark.com/uploadfile/files/71170077278.pdfIn PDF document text
  • http://zatacorp.com/upload/files/87645209278.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/45sshonrtmgrlq65k4hbcvq1b2/wimex.pdfIn PDF document text
  • http://bangkokmagnetwire.com/ecodev_test/image_system/files/85235782406.pdfIn PDF document text
  • https://slide-bearing.com/d/files/2825700735.pdfIn PDF document text
  • http://hakkabrothers.com/userfiles/file///ledika.pdfIn PDF document text
  • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8a0945108---23290729724.pdfIn PDF document text
  • http://katachizu.com/img/news/files/vokib.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=manual+yamaha+factor+150+ubsPDF 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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