Malicious PDF — malware analysis report

Heuristics 9

• 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.
• Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
  Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
• 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://ketchas.ru/uplcv?utm_term=nova+decoding+the+weather+machine+video+questions+answer+key PDF link annotation

  • http://decorstore.eu/upload/file/56222778105.pdfIn PDF document text
  • https://ginecologmuresan.ro/ckfinder/userfiles/files/rawagixateved.pdfIn PDF document text
  • http://zhouzhuank.com/v15/Upload/file/20219131845599549.pdfIn PDF document text
  • http://keramann.ru/uploads/files/11161467797.pdfIn PDF document text
  • http://stjconsulting.it/userfiles/files/20349354953.pdfIn PDF document text
  • https://sardavetri.it/userfiles/file/neroredidobimefat.pdfIn PDF document text
  • http://www.binghan.my/userfiles/file/29470274969.pdfIn PDF document text
  • http://xn--90aoaidn.xn--p1ai/ckfinder/userfiles/files/76976725468.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/svsjs6d63s4amevo234j1ordp4/fomogiwibepibebe.pdfIn PDF document text
  • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615fd95fd8224---romarezabigapujidubejiru.pdfIn PDF document text
  • http://pttaccounting.com/userfiles/files/lizugosisomejetej.pdfIn PDF document text
  • http://decom.pro/admin/ckfinder/userfiles/files/dudibeda.pdfIn PDF document text
  • http://dbcasagayathottam.org/assets/uploads/cms_images/files/galuzaza.pdfIn PDF document text
  • https://studioconcept-stand.com/fck_userfiles/file/3160414475.pdfIn PDF document text
  • http://vps133.premo.at/userfiles/file/30794308132.pdfIn PDF document text
  • https://charteriraq.ir/basefile/charteriraqir/files/nejexozalopotepapibabiz.pdfIn PDF document text
  • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615b6f91dc999---71220606260.pdfIn PDF document text
  • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/8f0e5b6e4f8dd6415abf764b5c20c5e4/4369124192.pdfIn PDF document text
  • http://profstil.az/userfiles/file/12389915025.pdfIn PDF document text
  • https://asesoriagade.com/app/webroot/files/files/tufed.pdfIn PDF document text
  • https://kheops-so.fr/ckfinder/userfiles/files/wazukadidit.pdfIn PDF document text
  • https://isigakizima.net/img/tmp/file/buxekoratamonifefadipofi.pdfIn PDF document text
  • https://bbpartner.cz/userfiles/file/mikaziselagujexewewenabi.pdfIn PDF document text
  • http://shrlie.com/upload_fck/file/2021-9-29/20210929094913301019.pdfIn PDF document text
  • https://www.rt9.rspo.org/ckfinder/userfiles/files/tawexitemanoka.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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