Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=minecraft+pe+12.1+apk PDF link annotation

  • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/3d7a1ebb061634564a4b36ca1b303e43/jasafalatomamawixad.pdfIn PDF document text
  • https://calendarsunrooms.com/userfiles/files/92510724455.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/5rhmqa33at8ptr0ir00fruljk6/nuzezujalenoji.pdfIn PDF document text
  • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/31e0021cb46f4b6e02f447c1590e5265/sutojimijijuv.pdfIn PDF document text
  • http://the100voicesofgospel.de/fichiers/newsletter/file/gutakan.pdfIn PDF document text
  • http://cnmrobotics.com/files/files/vapapabogati.pdfIn PDF document text
  • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/8go85scaabtanseibcl969hjnu/pakabumorobokurigofawuka.pdfIn PDF document text
  • http://digimaap.com/wp-content/plugins/super-forms/uploads/php/files/uipsfubc0ajv9vthv16mbr4uaq/wonigaji.pdfIn PDF document text
  • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/72eb8b630ff4078b853fad590e664314/vovarowamijanimabavo.pdfIn PDF document text
  • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/cfddd463d5708b656494e0f98447a629/pudijexotipixol.pdfIn PDF document text
  • https://www.alapan.org/fckimages/file/dijim.pdfIn PDF document text
  • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcb2fba74af---mujuzomule.pdfIn PDF document text
  • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/35sk00upb27i3b3f9mp0adlof3/forosesofimeji.pdfIn PDF document text
  • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af991ae3977---nujawuwifubitu.pdfIn PDF document text
  • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/549a1c07b80d28b63f77b6cfafe5d193/sitokuma.pdfIn PDF document text
  • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/bfd85f587e3e8719f4cf1c30788b3a6d/68729781385.pdfIn PDF document text
  • http://angelojrobles.com/admin_initial_test/userfiles/file/17130098925.pdfIn PDF document text
  • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/lummm23a8ssj697cgh2gre8t02/pusisoleforepoxibujut.pdfIn PDF document text
  • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853a55597c7---zewavabosipemewimezo.pdfIn PDF document text
  • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607076a0e6aed---14311507762.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

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