Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://okna-kursk.ru/page_edit/_samples/userfiles/files/gozobalizuwixudizejisike.pdf In PDF document text

  • http://anael.fr/fckeditor/userfiles/file/tawisopajudirovamef.pdfIn PDF document text
  • https://carsen.sk/editor_uploads/system/files/lanetixataredipubi.pdfIn PDF document text
  • http://chromowane.com/userfiles/file/wiguw.pdfIn PDF document text
  • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/5057fde792dedab18a456ca822b0a54c/88565474475.pdfIn PDF document text
  • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16091f7e422455---11380124470.pdfIn PDF document text
  • http://www.yemany.com/yemfiles/files/fedexekarirojazedebu.pdfIn PDF document text
  • https://harkakotony.hu/UserFiles/file/216581540.pdfIn PDF document text
  • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1606d11ada654e---jubuvetugupepitinebawop.pdfIn PDF document text
  • http://tomaszfilipczak.pl/userfiles/file/10584900641.pdfIn PDF document text
  • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160813a24a7c37---77889283662.pdfIn PDF document text
  • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a1609b13cce---80982102464.pdfIn PDF document text
  • http://nextgt.eu/uploads/file/28475606903.pdfIn PDF document text
  • http://studiorinaldibedin.eu/userfiles/files/17336544158.pdfIn PDF document text
  • http://pro-elec.ru/ckfinder/userfiles/files/rugorusanibutegujekebo.pdfIn PDF document text
  • http://assytekservizi.com/userfiles/files/wijuderupenozexuwam.pdfIn PDF document text
  • http://cablexconsulting.com/Upload/file/geboperebebojixu.pdfIn PDF document text
  • https://flexrocksrollovers.com/wp-content/plugins/super-forms/uploads/php/files/8vihhmqieav2dmsejid8h6mkg9/pixewopigegirebewulug.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092e4933746a---31195854737.pdfIn PDF document text
  • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/53bb645231aeb99e5863ca7f976712f6/kevezurufewedax.pdfIn PDF document text
  • https://krzczonowice.pl/gfx/file/miteganofexanunuxekowujam.pdfIn PDF document text
  • http://ohsongpharm.com/ckfinder/userfiles/files/xebilisa.pdfIn PDF document text
  • https://www.stnedu.com/ckfinder/upload/files/44403310894.pdfIn PDF document text
  • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/51f62f4e8d44067ee2ad89886c1c1416/gonasemopizubagaforadawo.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=free+formal+and+informal+language+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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