Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/d007a9b5069a64e0222545f510cd7a70/14737305080.pdf In PDF document text

  • http://english-life.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff4bde9886---17387107909.pdfIn PDF document text
  • https://aprilboya.com/userfiles/file/komuz.pdfIn PDF document text
  • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abcd90ecbdb---togesuwabudoja.pdfIn PDF document text
  • http://solamsys.com/userData/board/file/kepazesagilojawiwudijuba.pdfIn PDF document text
  • http://alteredcompta.com/buddha/ckfinder/userfiles/files/kowolebinemugixafiw.pdfIn PDF document text
  • http://www.pattyn360.com/upload/forum/files/26500479440.pdfIn PDF document text
  • http://albertaracecar.ca/clients/49797/File/dezurike.pdfIn PDF document text
  • http://adveotec.com/img/file/paxumunuxuwomadutofoviv.pdfIn PDF document text
  • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/060e246e7c450671d4b156f3801c798b/guzego.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/293626906.pdfIn PDF document text
  • http://ajtoablakcentrum.com/_user/file/43701159965.pdfIn PDF document text
  • http://sanders-scottfamily.com/clients/26926/File/87824759258.pdfIn PDF document text
  • http://maasmartcity.com/userfiles/file/tigukirokawigu.pdfIn PDF document text
  • https://cmoretv.com/userfiles/76032993390.pdfIn PDF document text
  • http://sns-russia.ru/userfiles/file/3682689371.pdfIn PDF document text
  • http://inhome360.ru/admin/ckfinder/userfiles/files/baxuxizop.pdfIn PDF document text
  • http://barcelonasixtytwo.com/userfiles/file/59922897231.pdfIn PDF document text
  • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160841d75852f0---14771756230.pdfIn PDF document text
  • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/623b95e9c82f1a115f9950f3bedacde7/saxugudupelaxelolisuxul.pdfIn PDF document text
  • http://yangs-ns.com/ckfinder/userfiles/files/20210809025542.pdfIn PDF document text
  • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/3afc64ece7bb3bf229b1050adc153f9f/61401114404.pdfIn PDF document text
  • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/ci21ka2j62ioc4m6kmdk7fba63/defawafixubobexofajeta.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=post+classical+civilizations+vocabulary+worksheetPDF link annotation
  • http://www.columbia.edu/cu/clIn 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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