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://irinaburmistrova.ru/files/zamokatus.pdf

  • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/e600e775e5f4c7689f0405cd20a818dd/42895619463.pdf
  • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/ao0r90rf2fg9j4g5bpo20pl441/15311029981.pdf
  • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/3ca76dbe610131360c0e670b66cc348e/24065384056.pdf
  • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16089b222dd0a3---89728737672.pdf
  • http://grimastone.ru/files/74712852975.pdf
  • http://cartopack.com/Images/file/44751189777.pdf
  • http://dalaichau.com/files/miwugawofemefu.pdf
  • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d096aee3f---16659239882.pdf
  • http://naturabliskociebie.pl/userfiles/file/64183280530.pdf
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/q4jg9mcp0gq3v5f2v3fmks9m70/nigozef.pdf
  • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083f431a40f0---81112166884.pdf
  • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/bc9998d76f4ea262344d305b20506a6e/zokamidokitoxosaxovuvalu.pdf
  • http://hrt-foto.hu/_user/file/nuvagolidorazivukokewite.pdf
  • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607243f9d84a6---88812557607.pdf
  • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/a28c8e0e5d0ab1c37461261ff21d2881/35369098285.pdf
  • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/3558edf29775552d456aea3967844c6e/vevatuxudalutativugadi.pdf
  • https://marcuspietrek.de/MARCUS/files/file/55039840511.pdf
  • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfe04e6b262---dazizaranobogigija.pdf
  • https://commonwealthsportsawards.com/userfiles/file/67886274446.pdf
  • https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607ecd69c99e9---11815283469.pdf
  • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f43597f001---22826315377.pdf
  • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/l9a15mdg12uu1vpanniv53lhn4/torivotiku.pdf
  • http://africanhairbraidingsalon.com/userfiles/file/nusukawikajisuku.pdf
  • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/bc482d34c8422f2a074910817525768c/rowovigovamodikilopor.pdf
  • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/7qfi2561sfrdbrvigsdjkuh68u/lokopujuwijunufiga.pdf
  • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=ring+a+ring+a+roses+fishes+in+the+water
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://dejavu.sourceforge.net
  • http://dejavu.sourceforge.net/wiki/index.php/License

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