Malicious PDF — malware analysis report

Heuristics 9

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
  PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
• 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://humicdp.com/uploads/2021-07-15/images/files/jufibuve.pdf

  • http://woodwork.pl/ubezpiecz/obrazy/file/25072568257.pdf
  • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16072730c1ac93---sesusuzulusu.pdf
  • https://holocaustresearch.pl/nowy/photo/file/67805907444.pdf
  • http://asea-admin.com/_userfiles/file/20210503231643.pdf
  • http://clinicaveterinariacittadivignola.com/userfiles/files/92145090143.pdf
  • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b275ea0a4e---wexiwoza.pdf
  • http://thepokeluau.com/uploads/files/80167776469.pdf
  • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160d35644b6d2d---kotaroribiwuvisilevaxop.pdf
  • https://used-machinetools.ro/app/webroot/files/userfiles/files/80194032409.pdf
  • http://saharun.org/uploads/ckfinder/userfiles/files/viletisebaruleka.pdf
  • http://amindoost.ir/images/upload/files/98332822677.pdf
  • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160a76ea7eaf0d---paperirafebeworobujuvari.pdf
  • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a06fae06e---35542084698.pdf
  • https://bdaudit.ro/userfiles/file/razamazo.pdf
  • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9bec89a3a---79433477604.pdf
  • http://j-line.ca/fck_upload/file/pipimo.pdf
  • http://qunjl.com/userfiles/files/rotonaneduxepel.pdf
  • https://tarzminder.com/resimler/files/dodugemare.pdf
  • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/7939ed327a1327bf8a3692462543e639/86399598992.pdf
  • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5081c2a4c---70233543934.pdf
  • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/23a40df8fdf80e959c7b25ccd40776bd/lonanoxamura.pdf
  • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=intersectionality+anthropology+definition
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://dejavu.sourceforge.net
  • http://dejavu.sourceforge.net/wiki/index.php/License

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