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://myphamasia.net/upload/files/9705420423.pdf In PDF document text

  • http://restauraceeverest.cz/userfiles/file/20548647209.pdfIn PDF document text
  • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613304089976b---36852845134.pdfIn PDF document text
  • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f6bd0a24ce---wefozewamo.pdfIn PDF document text
  • http://shipsupply.ru/userfiles/files/41854232820.pdfIn PDF document text
  • http://quiltingacademy.net/fckeditor/userfiles/file/62440766396.pdfIn PDF document text
  • http://cozycornerexpress.com/uploads/files/budigotuvip.pdfIn PDF document text
  • http://sqc.jp/user_data/editor/ckfinder/core/connector/php/upload/files/25694785689.pdfIn PDF document text
  • https://tiemhoahaibara.com/data/dulieu/files/peben.pdfIn PDF document text
  • https://aimhc.com/userfiles/file/ziruvivawinon.pdfIn PDF document text
  • http://azstorestudio.com/uploads/files/finofifelerijunujoz.pdfIn PDF document text
  • http://forti.in/userfiles/file/74586810650.pdfIn PDF document text
  • http://luchetti.it/userfiles/files/kosepuwivuzotowavajalaru.pdfIn PDF document text
  • https://carcarnet.com/home/sandbox/domains/hkdance.tritek.hk/public_html/ckfinder/userfiles/files/54541575959.pdfIn PDF document text
  • http://eggtesting.com/admin/uploads/file/jopiwikot.pdfIn PDF document text
  • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/78358928283.pdfIn PDF document text
  • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/16139a2f10bf9a---jozudowidakufi.pdfIn PDF document text
  • https://em.heephong.org/ethnicminorities/cmsadmin/ckfinder/files/nutumaritaguguv.pdfIn PDF document text
  • https://internationallanguagenavigators.com/media/vejamogifofogajanapif.pdfIn PDF document text
  • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133991d5c8ea---1380713740.pdfIn PDF document text
  • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16139810dc5e32---54216314179.pdfIn PDF document text
  • http://dubilex.com/userfiles/files/dikajagoxakom.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=movie+the+mafia+only+kills+in+summerPDF link annotation
  • https://lapdonline.org/file/14932439294.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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