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 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://crewmak.ru/uplcv?utm_term=two+pdf+into+one+online PDF link annotation

  • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/e938cc710ac1ca17a673f4b45ca73cd4/253585811.pdfIn PDF document text
  • http://dui-antidote.net/images/userfiles/file/fusitonixen.pdfIn PDF document text
  • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/d26d9ea78fa26d250a9381ba495d9b5b/xulewipugatugikide.pdfIn PDF document text
  • http://skyrun-arser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210609050832176492afx06f.pdfIn PDF document text
  • http://woori-tour.kr/FileData/ckfinder/files/20210613_488214AFD5BF0AF5.pdfIn PDF document text
  • http://sacoorhealth.pt/site/upload/file/pesunanis.pdfIn PDF document text
  • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a66a214cd96---24984506885.pdfIn PDF document text
  • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/5177de31348228a55d9019256b894d5a/fukaxivoli.pdfIn PDF document text
  • http://urparitet.ru/admin/ckfinder/userfiles/files/15738253436.pdfIn PDF document text
  • http://allprintusa.com/admin/images/file/9747190510.pdfIn PDF document text
  • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/1v5dib0h7huv6pq4rshbfbr891/47497437966.pdfIn PDF document text
  • http://4bx.pl/public/file/93720555289.pdfIn PDF document text
  • https://bearings.vn/images/ckeditor/files/saginexawog.pdfIn PDF document text
  • http://pc580.cn/upload_fck/file/2021-8-16/20210816093628627852.pdfIn PDF document text
  • http://ngocvietbungalow.com/upload/files/46646112914.pdfIn PDF document text
  • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfd092f113---ketufodemewobofix.pdfIn PDF document text
  • http://verduciautodemolizioni.it/userfiles/file/24211281747.pdfIn PDF document text
  • https://sandzak.best/wp-content/plugins/super-forms/uploads/php/files/4539cbb192faae9d65bd429459075765/sixural.pdfIn PDF document text
  • http://reicar.dk/userfiles/file/85731448414.pdfIn PDF document text
  • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eb14417481---26936411298.pdfIn PDF document text
  • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/b3fca837b4c75dd13dc18a58b5f068bb/85746992256.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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