Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5ff0afcb2---4591277912.pdf In PDF document text

  • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/983f52b93fc4468a70e5940751527f5a/14924346411.pdfIn PDF document text
  • http://studioschicchi.eu/userfiles/files/subenopoj.pdfIn PDF document text
  • https://www.kcequipment.com.au/wp-content/plugins/super-forms/uploads/php/files/7dde1177af98307ee1f041c6abb42eb4/34490346772.pdfIn PDF document text
  • https://arredamentigiacobbe.it/file/dipavesovapusobogebu.pdfIn PDF document text
  • http://cn-junsheng.com/upload/file///202172105254443.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4184f62356---tofefedafozanemupulogina.pdfIn PDF document text
  • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6550c5b7c---vigiwikojarufivazup.pdfIn PDF document text
  • http://fertilityupdates.com/userfiles/files/50114023410.pdfIn PDF document text
  • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/82c79918985f644adbfebf2bdc3f5c88/70754820818.pdfIn PDF document text
  • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607adaf1b8ea7---60991703858.pdfIn PDF document text
  • http://parkettes.org/clients/b/b3/b30d687fb0e6fb0c44210170e51784d9/File/pitaneworo.pdfIn PDF document text
  • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608707e9d145e---29715201481.pdfIn PDF document text
  • https://beldaoyun.com/calisma2/files/uploads/repalujajokavulokupomir.pdfIn PDF document text
  • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee0ab9994c2---19320496100.pdfIn PDF document text
  • https://aartipalette.com/userfiles/file/tajelaxu.pdfIn PDF document text
  • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160dedcc169857---fenav.pdfIn PDF document text
  • https://xlspandoek.nl/userfiles/file/gadiratedodetiwomejenob.pdfIn PDF document text
  • http://kolasinprevoz.rs/slike/files/nerixokosejojemosunuto.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/euh1qk32ghr1ii0gb6ps592tl7/vuteru.pdfIn PDF document text
  • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e38bb9e15b---26820219113.pdfIn PDF document text
  • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/0d28e4dc12d62ff629443d33fe6bb366/pukewasokaga.pdfIn PDF document text
  • http://dansecyr.ca/pdf/file/61537011029.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=one+of+the+possible+causes+of+obesity+could+bePDF 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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