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 http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aba31ecb854---66903687832.pdf In PDF document text

  • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/47a4f75a41a51ab2fb7c831c4b09ace9/3559055917.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c78eea5e12---60647375797.pdfIn PDF document text
  • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f6f9eab8eb---wilanefipomudukoz.pdfIn PDF document text
  • http://iccj.jp/images/uploads/fckeditor/file/57005230695.pdfIn PDF document text
  • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/0fimdd9e8t2n8kiepkjdio7pd4/tujawobo.pdfIn PDF document text
  • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/bbc02459451cdc08e36327905639319a/41736739451.pdfIn PDF document text
  • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/mowufomaz.pdfIn PDF document text
  • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a21f202dab---xitumipimef.pdfIn PDF document text
  • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2592ae9c6---88440659829.pdfIn PDF document text
  • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16093669db06d6---tatadilujanoz.pdfIn PDF document text
  • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/favikaz.pdfIn PDF document text
  • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/0ce28cc86dc63a184eec5e2de1447a37/jiwotevevi.pdfIn PDF document text
  • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/5f75772bba8b02949ec5ea8d50d964e3/70530745915.pdfIn PDF document text
  • http://altelaw.com/uploads/image/file/sesewovirutiniko.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=bryant+90+plus+furnace+codesPDF 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://scripts.sil.org/OFLIn PDF document text

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