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 https://nomylo.ru/uplcv?utm_term=current+affairs+in+zambia PDF link annotation

  • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/886152daf02e8d847b82736cab64c083/87044495622.pdfIn PDF document text
  • https://kham.vn/userfiles/file/65205479954.pdfIn PDF document text
  • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/eb3228455cf04badf0b6389d235ac923/12234150891.pdfIn PDF document text
  • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/db9906bd8dc263e6007a679a2198112e/67599186677.pdfIn PDF document text
  • https://amatnieks.com/pictures/image/38118496576.pdfIn PDF document text
  • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a830394239b---16856773075.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/uc63ovq7umf21cutnmpt6diop6/tuxatujomawedukutu.pdfIn PDF document text
  • http://myapartment.de/web/editor/files/bidimu.pdfIn PDF document text
  • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/pms5e6td65eor32617d78tiil0/gumuresetitukozatog.pdfIn PDF document text
  • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/cfcc4d312b88dcb98be39fa60055b39f/ladarepawif.pdfIn PDF document text
  • http://sotel-perm.ru/site/file/49215154484.pdfIn PDF document text
  • http://giprozdraw.ru/ckfinder/userfiles/files/vajikekebu.pdfIn PDF document text
  • http://thunderstar.cn/userfiles/file/20210513211459741960129.pdfIn PDF document text
  • http://anhuicrew.com/upload_fck/file/2021-5-9/20210509215514409020.pdfIn PDF document text
  • https://100tmt.com/uploadimage/files/20210627155412.pdfIn PDF document text
  • http://globalquestconsulting.com/userfiles/files/fojuvavosudilebotililivol.pdfIn PDF document text
  • http://wijnhuis-vaessen.nl/site/data/ws/files/52871287365.pdfIn PDF document text
  • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16086940165ee9---73580451362.pdfIn PDF document text
  • http://czdashan.cn/uploadfile/file/2021052809081573499.pdfIn PDF document text
  • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085b9246a52a---7352213596.pdfIn PDF document text
  • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/25fqr6pl0sqekv89ub5lv7jtt2/49720308781.pdfIn PDF document text
  • https://publicbridge.pl/userfiles/file/97590076423.pdfIn PDF document text
  • http://mytmbc.org/fckimage/file/55098225801.pdfIn PDF document text
  • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/c5fd2eb8c2288ae394573d8fcecd057c/55259971588.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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