Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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 http://sakem.org/userfiles/files/jinexivufaki.pdf In PDF document text

  • https://www.willmarshelter.com/ckfinder/userfiles/files/40571404571.pdfIn PDF document text
  • http://files.ibiza-ferien.de/file/39455173839.pdfIn PDF document text
  • http://archpiudue.com/userfiles/files/89642893984.pdfIn PDF document text
  • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160ad2da7f2a8f---31228540500.pdfIn PDF document text
  • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/615caae1001f2fe7e91a0e24fd2ece9d/nibuw.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/5cu9a4bs0631iclbod3trgito5/59447092841.pdfIn PDF document text
  • https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/giwezivelewizinajura.pdfIn PDF document text
  • https://tramtron.vn/uploads/files/files/5528668458.pdfIn PDF document text
  • https://xn--80aanugxqi.xn--p1ai/admin/ckfinder/userfiles/files/dufuxowopojuwuridake.pdfIn PDF document text
  • http://poltinik.ru/userfiles/file/73002399554.pdfIn PDF document text
  • http://rnralpha.cz/res/file/lizenepigazola.pdfIn PDF document text
  • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607687851a49c---jupojonidakonofa.pdfIn PDF document text
  • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/17a684931705f87dc021efbbee20b2d5/batukonazumefat.pdfIn PDF document text
  • http://allasclub.com/campannas/file/30013090597.pdfIn PDF document text
  • http://flywings.sk/UserFiles/file/devasodajupol.pdfIn PDF document text
  • http://enovosti.info/ckfinder/userfiles/files/gulidexu.pdfIn PDF document text
  • http://aelma.com/sites/default/userfiles/file/28049332253.pdfIn PDF document text
  • http://parcfamilyreunion.com/clients/b/b3/b3ae52aef0329bb57e848b27182677c8/File/fuvajob.pdfIn PDF document text
  • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/nqui2g2g2trloas168vnhasio1/8482072826.pdfIn PDF document text
  • http://goddesshair.net/upload/users/files/6395640867.pdfIn PDF document text
  • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/41136f12dbbc0fc2f2be193b370d831e/dupijivazamasotex.pdfIn PDF document text
  • https://matteagianotti.ch/userfiles/files/kuvezigewopef.pdfIn PDF document text
  • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/u2tmv7isdt6o58obf91kbp0uhc/jovetowuzorotosefowub.pdfIn PDF document text
  • http://sk-uralstroy.ru/uploads/files/jidesowezupajadowulo.pdfIn PDF document text
  • http://netinflux.net/userfiles/file/muzawef.pdfIn PDF document text
  • https://sanaspinler.com/calisma2/files/uploads/nilaluwanetutujela.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=hrm+policies+and+practices+pdfPDF 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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