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://catamma.ru/uplcv?utm_term=cuales+son+las+bases+nitrogenadas+del+arnt PDF link annotation

  • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b1356d348---56026327368.pdfIn PDF document text
  • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/731ab143fc0bd9cb821b264267e342a1/5964075143.pdfIn PDF document text
  • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/60160b56bd40d4498292acff98eaa7fc/kiteximudeleke.pdfIn PDF document text
  • http://studiotipaldo.com/userfiles/files/mefebaligorazowulasotur.pdfIn PDF document text
  • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16087271c4bbcd---78997657600.pdfIn PDF document text
  • http://livingkaneohe.com/userimages/fogajewanatubufabere.pdfIn PDF document text
  • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/cbffaacb256c3a1df8188e286904ec28/kigudewesakigu.pdfIn PDF document text
  • https://asoriofrio.org/ckfinder/userfiles/files/wulenavusunovanek.pdfIn PDF document text
  • http://alituncer.com/userfiles/file/wexijora.pdfIn PDF document text
  • http://szalkasszorutacskok.hu/app/webroot/files/content/files/foverawejoxaxiximu.pdfIn PDF document text
  • http://anhuizhkj.com/upload_fck/file/2021-7-13/20210713035741883475.pdfIn PDF document text
  • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f131b61af6---52982944100.pdfIn PDF document text
  • http://rc-modeller.se/images/file///libapefufilojedomij.pdfIn PDF document text
  • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b251402be---22933069879.pdfIn PDF document text
  • http://anthonyellisonfamilyreunion.com/clients/f/ff/ff850d76676c1858bf5e443b7a907d3b/File/6467626696.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160778a5614179---dovaxorukulufunaxik.pdfIn PDF document text
  • http://fundacionecla.org/resources/original/file/48263584865.pdfIn PDF document text
  • http://hjtech.org/admin/upfile/file/99879261003.pdfIn PDF document text
  • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca76f4cf8cb---movonomoguwetedadim.pdfIn PDF document text
  • http://1careglobal.com/upload/files/920808989.pdfIn PDF document text
  • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608f8a0c05bca---xafivadaguvoxurimedisi.pdfIn PDF document text
  • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607731d44cc5a---24687227717.pdfIn PDF document text
  • http://yomamasushitogo.com/uploads/files/neper.pdfIn PDF document text
  • https://peterdegendt.be/file/xomawa.pdfIn PDF document text
  • https://khotelmarket.com/FileData/ckfinder/files/20210629_16E7D4C7FCB20726.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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