Malicious PDF — malware analysis report

Heuristics 6

• 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://synerhu.ru/uplcv?utm_term=what+does+theoretical+framework+mean+in+research PDF link annotation

  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086fcd9e435a---41431897610.pdfIn PDF document text
  • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0eb4c01392---94969433881.pdfIn PDF document text
  • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160819bdf623f6---2283817941.pdfIn PDF document text
  • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f689cc9a01---bofapazof.pdfIn PDF document text
  • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff76575525---gorarebasaligejezuja.pdfIn PDF document text
  • https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160845a81633db---37849284911.pdfIn PDF document text
  • http://nktrading.qa/file/files/13653822924.pdfIn PDF document text
  • https://arhometutor.com/userfiles/file/9913525620.pdfIn PDF document text
  • https://bczenekar.hu/files/file/73294390959.pdfIn PDF document text
  • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/eida5k0n76bed7u5oe536nrpg4/kason.pdfIn PDF document text
  • http://podlahyadvere.sk/editor_uploads/system/files/jumofisejojelazujujaso.pdfIn PDF document text
  • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/81bbee701baeab7e245beba99e4f786a/53180054711.pdfIn PDF document text
  • http://stlnsk.ru/uploads/file/luzifodelogijezuvazog.pdfIn PDF document text
  • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/f9b70eaa4e88b03ad9174b153e029403/xofonapawezame.pdfIn PDF document text
  • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/0ef5dd74bd0cc446990f827307c3d603/20604370025.pdfIn PDF document text
  • http://adams-gold.ru/archive/image/file/31839481682.pdfIn PDF document text
  • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c41ec2cc3---mefatotuvelemar.pdfIn PDF document text
  • http://bagumul.com/file_upload/spaw_upload/file/20210608095448.pdfIn PDF document text
  • https://nanyangtextile.com/userfiles/file/fawusesefudewekaw.pdfIn PDF document text
  • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ffe6868d2---povarexavajajejediladugot.pdfIn PDF document text
  • http://fullcolorspandoeken.nl/userfiles/file/mifeganetekozimabak.pdfIn PDF document text
  • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/eb0c79a7f5cef976317748775b4529f4/46187201728.pdfIn PDF document text
  • http://guides2alpes.fr/uploads/file/lemenopuretuzukazogur.pdfIn PDF document text
  • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/4614e2c48a74e9f9eaecd625a5b52842/22253973326.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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