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
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://chcial.ru/uplcv?utm_term=decode+and+conquer+3rd+edition+pdf PDF link annotation

  • http://centromedicoveterinarioadda.com/userfiles/files/4176576402.pdfIn PDF document text
  • http://woodwork.pl/ubezpiecz/obrazy/file/siluvaviluwifow.pdfIn PDF document text
  • http://vivaldiskibus.com/FileData/ckfinder/files/20210902_97A91D35A92AF0AB.pdfIn PDF document text
  • http://bdnchem.com/upload/files/88326700641.pdfIn PDF document text
  • https://vinniescustoms.com/userfiles/files/1567477279.pdfIn PDF document text
  • http://akkoryazilim.com/userfiles/file/25348830038.pdfIn PDF document text
  • https://keluargamimpi.com/contents/files/depamisanikevi.pdfIn PDF document text
  • http://bajajsports.com/userfiles/file/dofirozowafe.pdfIn PDF document text
  • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613b74f566881---topapel.pdfIn PDF document text
  • https://travellifeafrica.com/ci/userfiles/files/58930507872.pdfIn PDF document text
  • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/f024fec894dc454f2526788b7df84b36/pawuzaranabivitabelesukud.pdfIn PDF document text
  • http://phamtrangia.site/upload/files/84780270019.pdfIn PDF document text
  • https://www.vek-bg.com/app/templates/js/ckfinder/userfiles/files/ziwomabukimoma.pdfIn PDF document text
  • https://alaqart.atelierleuthold.ch/userfiles/files/revolaxolobuzopowodu.pdfIn PDF document text
  • https://funcarele.com/ckfinder/userfiles/files/16276175687.pdfIn PDF document text
  • http://meta-min.com/files/91848519253.pdfIn PDF document text
  • http://xn----7sbjvweekof5d.xn--p1ai/files/files/93241099589.pdfIn PDF document text
  • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16134bb0b88c98---76861222242.pdfIn PDF document text
  • https://cebrium.ssnn.ro/images/79552127839.pdfIn PDF document text
  • https://viveironativodevicosa.com.br/ckfinder/userfiles/files/12904150186.pdfIn PDF document text
  • http://bloemenwinkelindex.nl/images/uploads/xobisumezimusapo.pdfIn PDF document text
  • http://dorisemitchell.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/53009196073.pdfIn PDF document text
  • http://leprofit.ee/cmsfile/contentfiles/86473525338.pdfIn PDF document text
  • https://xo-sound.ru/userfiles/file/bakadowafebifi.pdfIn PDF document text
  • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/8utik8n2h1jiqibjnvi70gqvb1/62006058467.pdfIn PDF document text
  • http://enkepharma.com/upload/files/13721867058.pdfIn PDF document text
  • http://irodori.kir.jp/files/file/29762631530.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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