Malicious PDF — malware analysis report

Heuristics 8

• 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.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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://allytemp.ru/uplcv?utm_term=viva+tv+mod PDF link annotation

  • http://konberdbio.com/upload/files/gexur.pdfIn PDF document text
  • https://gruppopolidori.com/upload/image/file/756488925.pdfIn PDF document text
  • http://packagingandfoodmachinary.com/userfiles/file/gemug.pdfIn PDF document text
  • http://charmingcurls.se/upload/file/23960152975.pdfIn PDF document text
  • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613edf0fe65d5---38717294831.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613552c8e138b---10199440906.pdfIn PDF document text
  • https://h1t-url12shio-turbo.com/contents/files/68814147329.pdfIn PDF document text
  • http://malabarisproducoes.com/arquivos/files/81568048025.pdfIn PDF document text
  • https://promobryansk.ru/userfiles/files/guvanasabizerakefaxozuv.pdfIn PDF document text
  • https://childrencareandliteracysociety.org/userfiles/files/gojukezojegux.pdfIn PDF document text
  • https://kuzeyilac.com/resimler/files/23206249849.pdfIn PDF document text
  • https://rainbowfurnitures.com/files/files/mowekojumid.pdfIn PDF document text
  • https://webbsoil.com/home/webb/public_html/ckfinder/userfiles/files/gorokusejudaporomepisag.pdfIn PDF document text
  • http://hong-tour.com/FileData/ckfinder/files/20210911_95BFF28FC80A107A.pdfIn PDF document text
  • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/f782ef8187258fa6784ddaf854e99e55/51044931452.pdfIn PDF document text
  • http://explosivedevices.ru/media/file/29038819738.pdfIn PDF document text
  • http://pastoret.it/userfiles/files/ribakozexobigumataziwav.pdfIn PDF document text
  • http://detikakdeti.ru/img/file/74468984976.pdfIn PDF document text
  • http://burragebrothers.org/demo/jolie/beta/userfiles/files/18963302938.pdfIn PDF document text
  • http://geometramaurotozzi.it/userfiles/files/63988149229.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133142d61347---87824581612.pdfIn PDF document text
  • https://cmfnepal.org/userfiles/files/wijetiremavexakurazig.pdfIn PDF document text
  • https://dursunguney.com/userfiles/files/88210745396.pdfIn PDF document text
  • http://elai.kz/upload/2021/09files/210910023711863965pgix0.pdfIn PDF document text
  • https://michaels-limo.cIn macro / runtime command snippet
  • 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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