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://synerhu.ru/uplcv?utm_term=460+lever+action PDF link annotation

  • http://betriacum.madteam.net/ckfinder/userfiles/files/16423013720.pdfIn PDF document text
  • http://hzkontejnery.cz/ckfinder/userfiles/files/fadevijawevanofu.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/u7gcdrd5u3augpjqqbkpqd8sn6/25493965884.pdfIn PDF document text
  • http://zjqzzx.com/uploadfile/file/2021090714584173499.pdfIn PDF document text
  • http://abdon.madteam.net/ckfinder/userfiles/files/nadupulevawuzove.pdfIn PDF document text
  • http://am-assets.com/aom/magnolia/userfiles/file/deluboxupuzizuzevalawi.pdfIn PDF document text
  • https://sledovani2.gpshlidac.cz/www/userfiles/files/xivadiburemijufafomo.pdfIn PDF document text
  • https://tigaintan.com/contents/files/koruv.pdfIn PDF document text
  • https://7foro.exceltur.org/exceltur_nuevo/ckfinder/userfiles/files/tobinovi.pdfIn PDF document text
  • http://www.taylormadetc.com/siteadmin/ckfinder/userfiles/files/vogolepam.pdfIn PDF document text
  • http://rogersdesignhouse.com/uploads/files/dixinemasezisuxerugewu.pdfIn PDF document text
  • https://psfund.org/public/uploads/files/cms_files/gurelidojejiboj.pdfIn PDF document text
  • https://xtremefitksa.com/ckfinder/userfiles/files/35662536115.pdfIn PDF document text
  • https://sinarlangit1.com/contents/files/65199764569.pdfIn PDF document text
  • http://rosesrealtyhomes.com/userfiles/files/fipimuvuzofakewoxatu.pdfIn PDF document text
  • https://santa.sg/images/users/00000000/files/fudasagimogetu.pdfIn PDF document text
  • http://angel-conference.org/upload_fck/file/2021-9-19/20210919215526233308.pdfIn PDF document text
  • http://industrialdevices.in/uploads/68522476220.pdfIn PDF document text
  • https://mehregancenter.ir/images/upload/files/bosubireborubozasakowoluj.pdfIn PDF document text
  • http://strelnicebudejovice.cz/userfiles/file/91193682883.pdfIn PDF document text
  • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16141392188edc---perewobijid.pdfIn PDF document text
  • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/9448579e8e0b42367e147d67c69e753d/volorimiluduzipopiji.pdfIn PDF document text
  • http://aow.infogestnet.it/ckfinder/userfiles/files/53899341854.pdfIn PDF document text
  • http://oasis-inwaste.asia/files/file/tilup.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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