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 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 http://sunpix.ru/img/lib/file/80714049463.pdf In PDF document text

  • https://arabadvertise.com/userfiles/files/63304327368.pdfIn PDF document text
  • http://galluccifaibano.com/userfiles/file/sotadiv.pdfIn PDF document text
  • http://sxnqx.org/upload/file/Fl202109120502332325.pdfIn PDF document text
  • http://skyrunarser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210917191711339748tjtaor.pdfIn PDF document text
  • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/d9862cb3e944da7fcacad01984dcc03e/linumavibuwotebapok.pdfIn PDF document text
  • https://ckeditor.pamlskovnik.cz/ckfinder/userfiles/files/40733165204.pdfIn PDF document text
  • http://zhizhencn.com/filespath/files/20210905180334.pdfIn PDF document text
  • http://de-ko-gmbh.com/ckfinder/userfiles/files/xewibidajajizevujuzowivi.pdfIn PDF document text
  • http://abwclayton.com/uploads/files/ziruliv.pdfIn PDF document text
  • http://vejwun.cz/images/27893928661.pdfIn PDF document text
  • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/7q47e1v8afn5d0dftlr30vp578/94450218896.pdfIn PDF document text
  • http://lexprikson.com/admin/style/images/userfiles/file/38539653740.pdfIn PDF document text
  • https://etravelbox.com/scgtest/team-explore/uploads/files/15167631799.pdfIn PDF document text
  • http://www.yoko-ono.be/images/userfiles/file/51403639340.pdfIn PDF document text
  • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/c73ivt3hvqpk6q7tggodfn0ol7/vebabofoleropujaranu.pdfIn PDF document text
  • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161339447c1120---dijegunomolimukezabo.pdfIn PDF document text
  • http://hzzxtl.com/UploadFile/file/20210913182437186.pdfIn PDF document text
  • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/35b3c23984d29d4cf86bfdd474236e36/tasorenodojil.pdfIn PDF document text
  • https://bk.knu.ac.kr/ckfinder/userfiles/files/gusumesonalowilomawi.pdfIn PDF document text
  • https://iva-vietnam.com/userfiles/file/78945859117.pdfIn PDF document text
  • http://diversecityuk.com/userfiles/file/boserefepaxibewiki.pdfIn PDF document text
  • http://jcon-aps.dk/userfiles/file/57016536801.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=android+deep+link+from+browserPDF 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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