Malicious PDF — malware analysis report

Heuristics 6

• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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://anhuicrew.com/upload_fck/file/2021-5-21/20210521031339729463.pdf In PDF document text

  • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/f2555019aea6789e08ba53464d8bd9a5/poroveke.pdfIn PDF document text
  • http://mondoacquapiscine.com/userfiles/files/gajapituwowiluwunaxoz.pdfIn PDF document text
  • http://jimsclub.net/new/board/img_tinfo/file/20210812002225.pdfIn PDF document text
  • http://cfh2.com/clients/d/d2/d2a7b52150a7a947468b52e9b7560e3c/File/bigokimepenutebipapusimem.pdfIn PDF document text
  • http://jncs.kr/page_data/file/20210622194145.pdfIn PDF document text
  • https://andrejc.si/files/file/daninamodezamanizalimesa.pdfIn PDF document text
  • http://dungcumaymoc.com/Images_upload/files/40718568954.pdfIn PDF document text
  • https://marblo.com/app/webroot/img/files/72026428069.pdfIn PDF document text
  • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f649a0202e---mowuwazoran.pdfIn PDF document text
  • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/ad4f5ef1ed91e87269f9d63c83bee6aa/madadusepegidonoxoter.pdfIn PDF document text
  • https://onhimalayas.com/ckfinder/userfiles/files/wowuji.pdfIn PDF document text
  • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160853474ebc75---62356403971.pdfIn PDF document text
  • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cbc89c54226---pumigisazimajirima.pdfIn PDF document text
  • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d2c441c8a62---famunogavabosu.pdfIn PDF document text
  • http://qianlong99.org/ckfinder/userfiles/files/rimalorobudid.pdfIn PDF document text
  • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa8d2d36de---voduwolinuvawovujodoti.pdfIn PDF document text
  • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609adc7283b2e---32442840878.pdfIn PDF document text
  • https://getadoc.in/ckfinder/userfiles/files/81613086762.pdfIn PDF document text
  • https://krono-original.vn/Images_upload/files/nexub.pdfIn PDF document text
  • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/7fd13ef040b34136e81201ea29bdde5b/murifemuxijupuvalak.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=time+worksheet+2nd+grade+printablePDF 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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