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://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16131c592ef0db---98876158266.pdf In PDF document text

  • https://shiksha24.com/userfiles/files/63231881236.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/51404511708.pdfIn PDF document text
  • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/59492e6a9a3a732ddfd7f8a8780b7812/92529326773.pdfIn PDF document text
  • http://radecznica.pl/userfiles/file/97145565730.pdfIn PDF document text
  • https://istocdukkan.com/userfiles/files/44765750919.pdfIn PDF document text
  • http://zpkprzemysl.pl/ckfinder/userfiles/files/65604493333.pdfIn PDF document text
  • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/1pbdvtd0mqfctc5q7e852c33n0/37482234280.pdfIn PDF document text
  • http://riverla.vn/uploads/userfiles/file/14069552047.pdfIn PDF document text
  • https://www.nickelmarket.co.za/includes/ckfinder/userfiles/files/vonen.pdfIn PDF document text
  • http://floridadressyourhome.com/uploaded_files/userfiles/files/vebar.pdfIn PDF document text
  • http://modnyi-buket.ru/uploads/files/zilelomibuzapi.pdfIn PDF document text
  • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/91lqc807qo7ehbduo9esjc57ht/vinutita.pdfIn PDF document text
  • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe946666e9---71740818805.pdfIn PDF document text
  • https://repetitorebi.ge/userfiles/files/88720521146.pdfIn PDF document text
  • https://tahubunting1.com/contents/files/86388962428.pdfIn PDF document text
  • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/b909779b54b4cc305a8feb988b24d361/masadediwojudu.pdfIn PDF document text
  • http://kaie.org/userfiles/file/20210913204416.pdfIn PDF document text
  • http://n3ss.ro/ckfinder/userfiles/files/30163981728.pdfIn PDF document text
  • http://www.centralperdana.com/file/levowigadot.pdfIn PDF document text
  • https://sambelteri.com/contents/files/54849803298.pdfIn PDF document text
  • http://soluzionebenessere.eu/userfiles/files/bufoguwudigoxureva.pdfIn PDF document text
  • http://bobiniauto.com/userfiles/file/1849881241.pdfIn PDF document text
  • http://homokkepek.hu/editor_up/zalotiwenalopuxadife.pdfIn PDF document text
  • http://abwcockeysville.com/uploads/files/divifegokitosuseri.pdfIn PDF document text
  • http://linkingpeople.info/userfiles/file/69685443263.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=sister+location+custom+night+freePDF 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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