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://chcial.ru/uplcv?utm_term=how+to+max+all+stats+in+fight+night+round+3+psp PDF link annotation

  • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/3881fe61169861f4af19388748640327/rawowotirawokizimekegux.pdfIn PDF document text
  • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/a5177cad8643236f704e34311f4b4620/28082558642.pdfIn PDF document text
  • https://uleiuri.ro/userfiles/file/gofewiruxowakevesoxeto.pdfIn PDF document text
  • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160831f0a28b13---24874797211.pdfIn PDF document text
  • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd0a0b9dc2---89553672612.pdfIn PDF document text
  • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072ab299b73e---tikuxolotutexizuliwoku.pdfIn PDF document text
  • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c2182c225c---bamezepoteke.pdfIn PDF document text
  • http://praguetransfer.com/files/file/kivotetudejik.pdfIn PDF document text
  • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/38f9ceaba194ddf94aa5c39cc43b6302/36126900348.pdfIn PDF document text
  • http://ed-web.cz/userfilesfile/pafevifalejidikeguko.pdfIn PDF document text
  • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/5vllcmvn5v0sgs2kfss7p29mqm/90816569738.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/urmj1l052h1q3ho9tmek5io0v7/98974309439.pdfIn PDF document text
  • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/9bf066296374de3813d3fa598eeac8bf/wixulopog.pdfIn PDF document text
  • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/56924264d8dc51c96593ab7ee563eb72/31734303613.pdfIn PDF document text
  • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c45c810fea---40357669589.pdfIn PDF document text
  • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094cbd4ecbb8---bonijo.pdfIn PDF document text
  • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1u6sg360u61lv7lc0vknt4vqf0/16130902178.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

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