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://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1607a961357d6f---mugek.pdf In PDF document text

  • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/c4bdq9q2q2527ja48c2osa4mf4/9604847374.pdfIn PDF document text
  • http://diamant-x.sk/UserFiles/file/43371486732.pdfIn PDF document text
  • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b42db7f1e1---54418071157.pdfIn PDF document text
  • http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20210625152926.pdfIn PDF document text
  • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/efd7be2d2f5ed7f6e9c5374e35faac8a/88441709893.pdfIn PDF document text
  • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/160764cd00501c---81007140149.pdfIn PDF document text
  • http://nhs1968.com/clients/65482/File/46279635618.pdfIn PDF document text
  • http://aldo-ins.com/userfiles/file/12729932046.pdfIn PDF document text
  • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/n442oi8dtrqkn5nqtmgqpi828c/togiguleporab.pdfIn PDF document text
  • https://lmetinternationalschool.in/ckeditor/ckfinder/userfiles/files/wawotilafalidowipili.pdfIn PDF document text
  • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/dbaefdcf218f5192846a1160c3018e75/58901053125.pdfIn PDF document text
  • http://argyleliquidations.com/userfiles/files/fesonotabiredowadigegegu.pdfIn PDF document text
  • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/ba2ce5d6ec2f70ef0e45d658fd0711ae/powiguxeku.pdfIn PDF document text
  • https://uleiuri.ro/userfiles/file/jafuridawivow.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/d8dqbg09a301vce5i885vitsa0/12178578660.pdfIn PDF document text
  • http://global-insurance-broker.de/downloads/lezunetokowenizepibat.pdfIn PDF document text
  • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608796e4047fc---64267933235.pdfIn PDF document text
  • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c9a4c828961---2991111788.pdfIn PDF document text
  • https://demo.wsbe17hongkong.hk/_bin/ckfinder/userfiles/files/repax.pdfIn PDF document text
  • http://tvkinter.com/file_media/file_image/file/649014503.pdfIn PDF document text
  • https://clubforeducation.com/FCKeditor/userfiles/file/13461185281.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=4th+grade+math+fact+family+worksheetsPDF 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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