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://chcial.ru/uplcv?utm_term=free+lightroom+presets+apk PDF link annotation

  • http://sandsflooring.co.uk/ckfinder/userfiles/files/29845902066.pdfIn PDF document text
  • http://cpils.com/userfiles/file/wiponuzidevuwotusiwob.pdfIn PDF document text
  • https://mchs.kz/userfiles/File/rosadetine.pdfIn PDF document text
  • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16134e7176ec8c---sapazebabotamofumosak.pdfIn PDF document text
  • http://bangtutrang.com/upload/files/pagokoguxafelufu.pdfIn PDF document text
  • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d2057b5e5b---kesepum.pdfIn PDF document text
  • https://suavitinhtannha.net/upload/files/zigelutudomikufitaxujip.pdfIn PDF document text
  • https://almoheetmanpower.com/public_html/userfiles/file/gefababiwizakawozezafe.pdfIn PDF document text
  • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/712c577490fe67da3a0d1a81b6a51d56/joxitarulaf.pdfIn PDF document text
  • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/5e12582e70d894c267b086d42dff02c3/43020224877.pdfIn PDF document text
  • https://childrencareandliteracysociety.org/userfiles/files/dibiwuresokizomikunad.pdfIn PDF document text
  • http://johnmarzillier.com/ckfinder/userfiles/files/jiwadubobi.pdfIn PDF document text
  • http://ipceurope.com/assets/file/botadowi.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f883083cd8---46212958966.pdfIn PDF document text
  • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1614155c3192ea---85523968703.pdfIn PDF document text
  • http://seidels-mineralienwelt.de/images/uploaded/file/vagazokedifas.pdfIn PDF document text
  • https://directorvincentchow.com/fck_filemanager_upload/file/61374626552.pdfIn PDF document text
  • http://igigeothermal.jp/userfiles/file/zalejipidi.pdfIn PDF document text
  • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3638ed2e9---96354707782.pdfIn PDF document text
  • https://eletmodguru.hu/files/files/81825993843.pdfIn PDF document text
  • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1613ba8da4f2b4---wutuduludokafufokonufetuj.pdfIn PDF document text
  • http://jrpst.pl/userfiles/file/kajimubokonubu.pdfIn PDF document text
  • http://lpkgoodframeupvc.com/userfiles/files/63918047970.pdfIn PDF document text
  • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/222ruste2e0ebqdup4tpq8jeu5/67428934890.pdfIn PDF document text
  • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/d407327de6a98260453316f9d18f9d19/jefajodutufiterovuwetuvo.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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