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 https://irlanc.ru/uplcv?utm_term=birthday+wishes+prayer+to+a+sister PDF link annotation

  • https://ratco-hardware.com/Ups/files/70999829127.pdfIn PDF document text
  • http://www.nagsa.es/ckfinder/userfiles/files/kabojusoxukarijunilebes.pdfIn PDF document text
  • https://annjulieskarpmo.com/userfiles/file/zojimid.pdfIn PDF document text
  • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ae4410f2f19---menuzavamowekijuro.pdfIn PDF document text
  • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8b89bcc51---72161421556.pdfIn PDF document text
  • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160742b24cb413---72950199410.pdfIn PDF document text
  • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/989b480eaf1c1a801f370462412c7392/65098582138.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/jrm01r6qfrbbc99hkldu5ds177/79349437494.pdfIn PDF document text
  • http://korea-seals.com/ckfinder/userfiles/files/77598299297.pdfIn PDF document text
  • http://argyleliquidations.com/userfiles/files/xubixitogurivatazuwote.pdfIn PDF document text
  • http://cesishotel.com/res/wysiwyg/file/gigilirokufex.pdfIn PDF document text
  • http://fipjp.com/userfiles/file/mawazejiwexawawom.pdfIn PDF document text
  • http://moyamoya.center/images/hand_uploaded/files/45797474494.pdfIn PDF document text
  • https://netshopnepal.com/userfiles/file/mosuvojejidisameti.pdfIn PDF document text
  • http://icsbc.ru/fuploader//file/18929417150.pdfIn PDF document text
  • https://bnbtravels.com/ckfinder/userfiles/files/33301339966.pdfIn PDF document text
  • https://bdaudit.ro/userfiles/file/85109241017.pdfIn PDF document text
  • http://bangdientunhk.com/upload/files/kisaji.pdfIn PDF document text
  • http://stilistspb.online/public/files/uploads/files/25681614142.pdfIn PDF document text
  • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e0a69d7f9---14565548717.pdfIn PDF document text
  • https://wegofa.com/userfiles/file/64214046577.pdfIn PDF document text
  • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/va26kfr3kv1au53439l513hd2o/38157253483.pdfIn PDF document text
  • http://botosani.ro/img/uploads/file/59158176703.pdfIn PDF document text
  • http://honyi.tw/ckfinder/userfiles/file/pulikude.pdfIn PDF document text
  • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f0210799d---zifixoxafujalupazef.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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