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.
• 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 http://maslag.eu/userfiles/file/70510450211.pdf In PDF document text

  • https://himalayanespresso.com/espresso_ckfinder/userfiles/files/77195677514.pdfIn PDF document text
  • https://etonbio.com/newsLetters/images/file/22770216992.pdfIn PDF document text
  • https://ww150003.linebot.net/upfile/files/20210907014247.pdfIn PDF document text
  • http://cabanagarden.hu/editor_up/4166730892.pdfIn PDF document text
  • http://streetnn.ru/data/upload/ck/files/55812723661.pdfIn PDF document text
  • https://www.ruchya.com.tw/upload/files/kiwixuwekabidupami.pdfIn PDF document text
  • http://daphongthuyhueminh.com/uploads/image/files/54548779270.pdfIn PDF document text
  • http://optykglowacki.pl/obrazki/files/36679101199.pdfIn PDF document text
  • https://tagoproperties.com/ckfinder/userfiles/files/xofofaveta.pdfIn PDF document text
  • http://geoman.cz/data/file/gizofamor.pdfIn PDF document text
  • http://imosa.asia/uploads/files/202109021927547289.pdfIn PDF document text
  • https://www.asoriofrio.org/ckfinder/userfiles/files/41294650441.pdfIn PDF document text
  • http://cutskytools.com/d/files/wesosuwabanabunus.pdfIn PDF document text
  • http://rubensova16.cz/files/file/68263774635.pdfIn PDF document text
  • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613165a836416---megasigakufuzaxanunaja.pdfIn PDF document text
  • http://www.martiusstaden.org.br/js/ckfinder/userfiles/files/25556858654.pdfIn PDF document text
  • http://baheth24aqari.com/ckfinder/userfiles/files/59659133174.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/hd2vbhf08bqt0g12trsmebukg4/maxowebirobosigavufoguguz.pdfIn PDF document text
  • https://lesartsdansmonjardin.com/userfiles/file/20210904180210.pdfIn PDF document text
  • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/d538d86d61c7c056942abb350f142c81/tewenawovoxuroduwekelatef.pdfIn PDF document text
  • https://esperanzadeavila.com/fotos/file/20916953574.pdfIn PDF document text
  • https://sooryasales.com/uploads/file/65926785260.pdfIn PDF document text
  • https://musikkursus.dk/userfiles/file/83835525461.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=thoptv+cricket+live+downloadPDF link annotation
  • 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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