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.
• Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
  PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
• 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://wastran.ru/uplcv?utm_term=introducing+yourself+worksheet+pdf PDF link annotation

  • http://cachnhietwin.com/luutru/files/81109957139.pdfIn PDF document text
  • http://ladue62.com/clients/2/2d/2d0487a90c18d3a1b3df44839405a665/File/35912825984.pdfIn PDF document text
  • http://sbox-technology.com/upload/datoteke/46130598833.pdfIn PDF document text
  • http://katheran.com/clients/55933/File/39459472874.pdfIn PDF document text
  • https://acryl-bg.com/userfiles/file/kuremovunoso.pdfIn PDF document text
  • http://brezov-gaj.si/uporabnik/file/novuxogotopijopiwuvel.pdfIn PDF document text
  • http://140.121.180.103/ckfinder/userfiles/files/44354872324.pdfPDF link annotation
  • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b3c5ba1be---93891606658.pdfIn PDF document text
  • http://mocphatreal.com/assets/images/ckfinder/files/papetozemuzude.pdfIn PDF document text
  • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/c829mmfhmanbukuo7628qflbsj/muwesikakuwawunab.pdfIn PDF document text
  • http://poiskvod.ru/images/file/jejaxedu.pdfIn PDF document text
  • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609083d3d8535---pufowunasitevim.pdfIn PDF document text
  • http://thallo-food.hu/uploads/ckfinder/userfiles/files/gidamalezupenujofejakuk.pdfIn PDF document text
  • http://neodentpetrosino.it/userfiles/files/99129984428.pdfIn PDF document text
  • http://pilanatofishing.com/home/sandbox/domains/shelter.sandbox.tritek.hk/public_html/ckfinder/userfiles/files/22986405191.pdfIn PDF document text
  • http://goksirlambinowice.pl/img/upload/files/kijamezopigufu.pdfIn PDF document text
  • https://zoldlepes.hu/userfiles/file/1670848517.pdfIn PDF document text
  • http://studiomedicoveterinariobellucci.eu/userfiles/files/beledibojanu.pdfIn PDF document text
  • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c4cf1836fea---28599877977.pdfIn PDF document text
  • http://szyldkj.com/luodan/images/userfiles/file/66787282956.pdfIn PDF document text
  • https://huanghecables.com/d/files/79307021056.pdfIn PDF document text
  • http://greece-ex.com/images/blog//file/68579091577.pdfIn PDF document text
  • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/11f882745b3d84f4909bfba53ddf78b9/58835753714.pdfIn PDF document text
  • http://galenbio.com/images/upload/file/12216206628.pdfIn 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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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