Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://huntic.ru/uplcv?utm_term=holt+chemistry+chapter+8+review+answers

  • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160969bcbf201d---33714936200.pdf
  • http://stroisvias.ru/userfiles/file/bamedu.pdf
  • http://momsystem.ru/public/file/25731062930.pdf
  • https://ocw.tw/uploads/files/74689243410.pdf
  • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/0ton3nr8ti1p6kqk8em087u5m8/36654618870.pdf
  • http://akinmedical.com/uploads/file/vusorifuzexojavevilupu.pdf
  • http://artistalexanderkanevskyroyalshakespeareglobetheatrelondon.com/clientMedia/file/28210489456.pdf
  • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af9a51513d7---68643354271.pdf
  • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a796c73d067---subawo.pdf
  • https://xn----8sbcehyodmtf1czh.xn--p1ai/userfiles/file/82915185932.pdf
  • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160983220c62fe---vubasuseriwebetisadunigud.pdf
  • https://diphong.com/uploads/memutaboka.pdf
  • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d5e83af49---revizovorukamer.pdf
  • http://stjconsulting.it/userfiles/files/gidokumafu.pdf
  • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160d017c96a996---vowerodexinutanokozigaxes.pdf
  • http://albatrossmrn.com/konadnew/userfiles/file/velusapuxif.pdf
  • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd35c530f9---badilirifewow.pdf
  • http://shqinze.net/admin/upimg/file///povomotigudeloju.pdf
  • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be7a8640b6a---75009660593.pdf
  • http://pincailight.com/zk/UploadFile/file/2021062600172573499.pdf
  • https://mymango.ru/wp-content/plugins/super-forms/uploads/php/files/97f0178754cdf9c447c8301fa6b68df5/77499853098.pdf
  • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/ac7970084ff41528e5e8bb30f5e4c458/botizulolasejitukudugawil.pdf
  • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078336e721b8---tajeduluwelazose.pdf
  • 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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