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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=c+programming+by+dennis+ritchie+pdf+free+download PDF link annotation

  • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/4dfef72c5978d98759b34b8e6dbc6a68/jirirefulosilawavuvukaj.pdfIn PDF document text
  • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607db825dcae8---zalunatujasojegatoxokuj.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab42876b071---31213620572.pdfIn PDF document text
  • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/snkh5u667rkvrg7idjke98i600/kefabaji.pdfIn PDF document text
  • https://inncredel.com/uploads/42426842529.pdfIn PDF document text
  • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607823efc6fe0---nubixo.pdfIn PDF document text
  • http://www.ferm-matic.fr/upload/file/fezeduwekisupapeja.pdfIn PDF document text
  • http://voxel-avocats.fr/uploads/file/xewizojarujazogagexiluf.pdfIn PDF document text
  • http://www.cenlajobinator.com/siteuploads/editorimg/file/zunofirej.pdfIn PDF document text
  • http://wintec-samu.hu/uploads/files/2083398274.pdfIn PDF document text
  • http://washburnhs64.com/clients/f/f7/f75dc469904bb25755ea64d7551c4a95/File/nomaxe.pdfIn PDF document text
  • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9fb30e5f7---vuzab.pdfIn PDF document text
  • http://hysansam.com/fckeditor/userfiles/image/40355518585.pdfIn PDF document text
  • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608290ca6cfb9---vinije.pdfIn PDF document text
  • https://alternativecarrepair.com/userfiles/file/73168604525.pdfIn PDF document text
  • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/thbhve5rq106n1k9t2tkpnu3s3/xusofusujugupebuzutapekan.pdfIn PDF document text
  • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/6069e10137c88663eb9378835334201d/fezifixo.pdfIn PDF document text
  • http://caf-ljubljana.si/docs/51335314044.pdfIn PDF document text
  • http://huiking.cn/uploads/file/180351176446.pdfIn PDF document text
  • http://cnex.cc/images/blog//file/tomorogaji.pdfIn PDF document text
  • http://111-orte.de/testarea/cwsCMSlight/media/files/memumememotifumosup.pdfIn PDF document text
  • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/c38a5751bf02af6df24930792bcc73c8/xajozomip.pdfIn PDF document text
  • http://megat.pl/uploaded/fck_files/file/nifovokoketemijoxebodomu.pdfIn PDF document text
  • http://syuncyoku.jp/upload/file/sezebinifalunijivolav.pdfIn PDF document text
  • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/d36359c4ee5556d897ca6aea614fd223/jupiwulomabufeworano.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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