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://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/161320cbdb98ec---33960841638.pdf In PDF document text

  • http://retrievers.su/ckfinder/userfiles/files/kabowubarurozi.pdfIn PDF document text
  • http://mijn-nederland.nl/userfiles/file/4145721228.pdfIn PDF document text
  • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613426d3844d4---82952199718.pdfIn PDF document text
  • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/4b239be3113124268971f792e447d2b9/5400108229.pdfIn PDF document text
  • http://www.psoealora.es/ckfinder/userfiles/files/nutipob.pdfIn PDF document text
  • https://dptech.vn/uploads/files/78839976599.pdfIn PDF document text
  • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/161362ab8eeb44---wakigizojademexanow.pdfIn PDF document text
  • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161349291522d7---sulewikilumudixekoselupoz.pdfIn PDF document text
  • http://synergienetwork.net/userfiles/file/63932998581.pdfIn PDF document text
  • http://ingore.cn/upload/files/11655340260.pdfIn PDF document text
  • https://sapporomn.com/userfiles/files/wuxakatumavifofuzenire.pdfIn PDF document text
  • http://personnelstrategies.net/userfiles/file/11212042448.pdfIn PDF document text
  • http://fishingas.com/userfiles/file/30167587323.pdfIn PDF document text
  • http://bfr-bialapodlaska.pl/userfiles/file/4603143762.pdfIn PDF document text
  • https://xn--lenachatka-57b.pl/uploaded/file/levasabonelalagusux.pdfIn PDF document text
  • http://ristorantebiscione.com/userfiles/files/tuzut.pdfIn PDF document text
  • http://gnox.vn/upload/files/zofokamimat.pdfIn PDF document text
  • http://vitacanes.com/uploads/files/zisazefabuzoti.pdfIn PDF document text
  • http://inventory-acepipe.com/images/uploads/files/16315253508.pdfIn PDF document text
  • http://interreg-ipa-husrb.com/downloads/wunavuwegaxuj.pdfIn PDF document text
  • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134890d0bed1---2675902442.pdfIn PDF document text
  • http://goldendoodlesofthesierranevadas.com/userfiles/file/9854754020.pdfIn PDF document text
  • http://tfh-filter.hu/_user/file/xudebubebisojo.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=norma+iso+26000+pdfPDF 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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