Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• 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://synerhu.ru/uplcv?utm_term=military+emojis+for+android PDF link annotation

  • http://proclima-membranes.ru/userfiles/file/velenisijonogob.pdfIn PDF document text
  • http://fruhmann-elektrotechnik.at/vuvawamovesigamis.pdfIn PDF document text
  • http://sky1981.com/asset/uploads/files/jilepavuketujexugabazi.pdfIn PDF document text
  • http://www.hro.ait.ac.th/js/ckfinder/userfiles/files/93076926318.pdfIn PDF document text
  • https://horgaszvelem.elelmiszer-hazhozszallitas.hu/ckfinder/userfiles/files/vojepilujiwisuwufi.pdfIn PDF document text
  • https://vietnamairlinescorp.org/js/ckfinder/userfiles/files/92295930046.pdfIn PDF document text
  • http://rund-sro.cz/UserFiles/File/sokerikibir.pdfIn PDF document text
  • http://drentmedischadvies.nl/uploads/files/39814912792.pdfIn PDF document text
  • http://udokutscher.de/gfx/userfiles/files/ruferuko.pdfIn PDF document text
  • http://dywin.com/uploadfile/files/joxukipozojukujijolid.pdfIn PDF document text
  • https://greenfuturevietnam.com/Upload/files/bupapusowekedis.pdfIn PDF document text
  • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139de62c9ed2---zakevugipuludakubobu.pdfIn PDF document text
  • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/161466dda52bb3---nutowuv.pdfIn PDF document text
  • http://zuszdounky.cz/files/zaxaxuponi.pdfIn PDF document text
  • http://quaretti.it/userfiles/files/12944700556.pdfIn PDF document text
  • http://grafichesirio.com/userfiles/files/48480571357.pdfIn PDF document text
  • http://federicozucchettiarchitetto.eu/userfiles/files/31116804570.pdfIn PDF document text
  • http://fmafirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/52256265397.pdfIn PDF document text
  • http://www.smwiarus.pl/ckfinder/userfiles/files/36714868540.pdfIn PDF document text
  • http://cesurmakina.com/userfiles/file/jiditugenebuj.pdfIn PDF document text
  • http://charmingcurls.se/upload/file/88185102209.pdfIn PDF document text
  • http://phupmirpol.pl/userfiles/file/86300859665.pdfIn PDF document text
  • http://makinsushi.com/uploads/files/piwoboraketigenosofo.pdfIn macro / runtime command snippet
  • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/m20u7j8b0i4ji4mvrnnk7o1oqf/zikirasapava.pdfIn PDF document text
  • http://jhdjt.com/images/upload/File/bigugebifireregalomudulu.pdfIn PDF document text
  • http://vhktn.at/images/content/files/60915852139.pdfIn PDF document text
  • http://phupmirpol.pl/usIn 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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