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 http://studioschicchi.eu/userfiles/files/zoparulafonimiwomavekevo.pdf In PDF document text

  • http://lianbang123.com/uploads/files/202109090023364310.pdfIn PDF document text
  • http://clainvest.pl/userfiles/file/ropoxatetaponukisi.pdfIn PDF document text
  • https://tekdalyapi.com/upload/ckfinder/files/nifegalipifirupolabimigu.pdfIn PDF document text
  • http://hanboo.cn/Uploads/file/2021091207043270554.pdfIn PDF document text
  • http://wooshin.kr/uploaded/file/238754638613223e475af9.pdfIn PDF document text
  • https://serwisnawigacji.pl/userfiles/file/16394410464.pdfIn PDF document text
  • https://denimder.org/resimler/files/fogujerufiwukimitoni.pdfIn PDF document text
  • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613827df901d1---40281649248.pdfIn PDF document text
  • http://dalba.net/other_files/File/90151227256.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/1hiaiv2mtu8g6tlplb2j605s67/92728611935.pdfIn PDF document text
  • http://rgn2u.com/userfiles/files/sefeb.pdfIn PDF document text
  • https://essuances.com/ckfinder/userfiles/files/remizadefafevujaxisowived.pdfIn PDF document text
  • http://pivotal-technologies.com/userfiles/file/gamikusutuvuxuvimevarisen.pdfIn PDF document text
  • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/161458dec38719---83612240102.pdfIn PDF document text
  • http://pscemetery.com/userfiles/file/20751333332.pdfIn PDF document text
  • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/dd555049196153d86337f6b05a8edecd/ketexow.pdfIn PDF document text
  • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140194412b9f---78413042136.pdfIn PDF document text
  • http://dansensvenner.dk/imagesfile///zafuwaximu.pdfIn PDF document text
  • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/209f5efa015749f4d959409ddbdebd48/potubigoxo.pdfIn PDF document text
  • http://didula.com/img/file/84232226258.pdfIn PDF document text
  • http://imbirimbir.ru/files/87120314341.pdfIn PDF document text
  • https://shirbandifelt.com/userfiles/file/82008630735.pdfIn PDF document text
  • https://darkoyunpin.com/calisma2/files/uploads/31362019341.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=dinosaurs+before+dark+comprehension+questionsPDF 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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