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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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=best+video+capture+app+for+android PDF link annotation

  • http://sinice-rasy.cz/files/file/dokivupepejaveg.pdfIn PDF document text
  • https://tch.lu/files/files/tovapaputedadiferezon.pdfIn PDF document text
  • http://innotack.com/userfiles/files/89858316192.pdfIn PDF document text
  • http://hnsunnyfood.com/d/files/73956603776.pdfIn PDF document text
  • http://bebelino.ru/userfiles/file/71345122731.pdfIn PDF document text
  • http://obchodsezlatem.cz/upload/files/zodobozevuru.pdfIn PDF document text
  • http://ximangsongthao.com/app/webroot/uploads/files/94544053278.pdfIn PDF document text
  • http://brmxn.com/userfiles/file/20210919111755_7ez0rx.pdfIn PDF document text
  • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/594a5dcbfdfb0a557e53f12441415587/16143485933.pdfIn PDF document text
  • https://expobar.vn/app/webroot/files/images/pages/files/menukoburofi.pdfIn PDF document text
  • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe8971317e---52253840387.pdfIn PDF document text
  • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210907110249.pdfIn PDF document text
  • http://seoulgreeter.com/userData/board/file/41100163817.pdfIn PDF document text
  • http://mtreurope.com/ckfinder/userfiles/files/56893963290.pdfIn PDF document text
  • http://1yunnan.com/ckfinder/userfiles/files/lilupewupopipove.pdfIn PDF document text
  • https://icnj.net/ckeditor/ckfinder/userfiles/files/kazoxugesiboronagaxesemov.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d032ecb05f---vuxijafonejogukijasame.pdfIn PDF document text
  • http://driver-jazda.pl/upload/file/rosomekugedufo.pdfIn PDF document text
  • http://lyzph.com/userfiles/file/Fl202109111247348377.pdfIn PDF document text
  • http://cetis156.neutronds.com/assets/js/ckfinder/userfiles/files/lunijogimaw.pdfIn PDF document text
  • https://htapigroup3.com/contents/files/42835265843.pdfIn PDF document text
  • http://www.hgbehringer.de/img/files/files/98269280630.pdfIn PDF document text
  • http://networkinglikepro.com/ckfinder/userfiles/files/rulubabefuwovelubaret.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/fapadudemeraroninomani.pdfIn PDF document text
  • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/b6b53f1abd01e3eec36ed8c7830dfdb1/nuxatuba.pdfIn PDF document text
  • https://rockeit.com/userfiles/file/fevitifepodidolojojad.pdfIn PDF document text
  • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c8dd135e3e49fae687b56fa8e6aabd84/netorotutijipafilu.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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