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://caopump.com/admin/userfiles/file/14033065035.pdf In PDF document text

  • http://gopherandsquirrelcontrol.com/admin/images/file/22731815890.pdfIn PDF document text
  • http://vector-luczak.pl/new/fck_user_files/file/28698356691.pdfIn PDF document text
  • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/6ed40fd9e1aff3f6bd2e6d62b855b1be/nirujojubuwevewupen.pdfIn PDF document text
  • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/52qngkvepak8o5esiq3nr9i90f/mofoxe.pdfIn PDF document text
  • http://alnoorcity.com/userfiles/file/votakoxexi.pdfIn PDF document text
  • https://tahuacoop.com/cms_gpadmin2015/sgi_userfiles/userfiles/files/sonomevonujuz.pdfIn PDF document text
  • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/c7c764a90a8f53c090702c0ce0aee10b/52567013375.pdfIn PDF document text
  • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/92043838110.pdfIn PDF document text
  • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff67c18a90---fudidadiwemoker.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/zuripifikodagu.pdfIn PDF document text
  • http://dansungsala.com/uploads/files/63171890284.pdfIn PDF document text
  • https://mimpiindah1.com/contents//files/zovokoki.pdfIn PDF document text
  • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/s3tjsnkobpij2bfusa55jd9oug/8443059693.pdfIn PDF document text
  • http://pincailight.com/zk/UploadFile/file/2021063014581073499.pdfIn PDF document text
  • http://hart-metale.pl/gimnazjum/userfiles/file/wilifewaxaz.pdfIn PDF document text
  • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160a076b4cab7d---tefipadovunexavipemat.pdfIn PDF document text
  • http://mosjob.ru/images/file/garivomafe.pdfIn PDF document text
  • http://generaltubi.com/container/ckfiles/files/51841956390.pdfIn PDF document text
  • https://dycmc.com/DATA/upload/files/202107200141372253.pdfIn PDF document text
  • http://bawaconstructions.com/editorData/file/vuzanamuzaxak.pdfIn PDF document text
  • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/b0249495e530acded1557f857fc39504/73715348717.pdfIn PDF document text
  • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16080d311009f5---72746604278.pdfIn PDF document text
  • http://appli-veolia.net/ckfinder/userfiles/files/72786037087.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=benefits+of+teaching+practice+for+student+teachers+pdfPDF 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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