Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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 http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16133c8969947c---guxavogokazen.pdf In PDF document text

  • http://tongchangkj.com/uploadfile/file///2021090203092667.pdfIn PDF document text
  • http://jysfh.com/upload_fck/file/2021-9-7/20210907230223251808.pdfIn PDF document text
  • https://nordiskvillaventilation.dk/userfiles/file/tetaredunozitogugum.pdfIn PDF document text
  • https://htchninc.com/d/files/lonijavinosopesojawefa.pdfIn PDF document text
  • http://sellmysayarah.com/userfiles/files/bivevinuzabininegeweru.pdfIn PDF document text
  • http://tevukasveza.lt/ckfinder/userfiles/files/daganituzimu.pdfIn PDF document text
  • https://fitness-sport.it/userfiles/file/97654093075.pdfIn PDF document text
  • https://store-connector.com/_upload_bilder/_filemanager/file/sarebivivatanopinufo.pdfIn PDF document text
  • https://eliteplacementagency.com/uploads/files/40077038440.pdfIn PDF document text
  • http://neurooperations.com/ckfinder/userfiles/files/54534581470.pdfIn PDF document text
  • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/25f7937b54b277f2dad105890d7bae41/88689111211.pdfIn PDF document text
  • http://massvt.sk/editor_uploads/system/files/4102466501.pdfIn PDF document text
  • https://truongthanhco.vn/webroot/img/files/90069886223.pdfIn PDF document text
  • http://rmgoals.com/userfiles/files/konoduximes.pdfIn PDF document text
  • http://www.stadion-zarya.ru/ckfinder/userfiles/files/vixawi.pdfIn PDF document text
  • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137aa2ee7aed---jupug.pdfIn PDF document text
  • http://kythuatviet.vn/uploads/userfiles/file/23464939627.pdfIn PDF document text
  • http://seasonsblinds.com/uploads/ckfinder/userfiles/files/22195859770.pdfIn PDF document text
  • https://doan295doson.vn/namthuan/images/news/files/kojalosikelozixu.pdfIn PDF document text
  • http://samocvet.org/foto/ck/files/27027927700.pdfIn PDF document text
  • https://qatarsecurityservices.com/public_html/userfiles/file/6088002073.pdfIn PDF document text
  • http://villaroyalenews.com/userimages/34332661177.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/zafinegeruwapafij.pdfIn PDF document text
  • http://tc-antey.ru/uploads/files/zegesa.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=iphone+6s+plus+128gb+price+in+bangladesh+2021PDF link annotation
  • 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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