Malicious PDF — malware analysis report

Heuristics 6

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
  Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
• 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
• 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://ttraff.cc/wb?keyword=exercices%20sur%20les%20familles%20de%20mots%20cm2%20pdf#exercices+sur+les+familles+de+mots+cm2+pdf In PDF document text

  • http://files.hornsbyptsa.org/uploads/1/3/1/3/131379434/bomujakurufilo.pdfIn PDF document text
  • http://files.scharencycles.com/uploads/1/3/0/7/130776118/ginukaxezunat.pdfIn PDF document text
  • http://files.centrocha.org/uploads/1/3/0/8/130873870/7918256.pdfIn PDF document text
  • http://files.nducuwangugi.com/uploads/1/3/0/9/130969555/gimuviri-megatanizus-selusifo.pdfIn PDF document text
  • http://files.bensawyermusic.co.uk/uploads/1/3/2/7/132740218/kelupotamevivok.pdfIn PDF document text
  • http://files.haralsoncountyhistory.com/uploads/1/3/2/3/132302913/4438840.pdfIn PDF document text
  • http://files.lockmangenetics.com/uploads/1/3/0/7/130775383/nizejab.pdfIn PDF document text
  • http://files.striba.net/uploads/1/3/1/3/131380413/9297027.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://sivobir.files.wordpress.com/2020/07/lalaxusatevupejupemoj.pdfIn PDF document text
  • https://murafedine.files.wordpress.com/2020/06/sodelono.pdfIn PDF document text
  • https://tufezub.files.wordpress.com/2020/06/pobezuboxiziwomufo.pdfIn PDF document text
  • https://sakadukil.files.wordpress.com/2020/06/13104623946.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://scripts.sil.org/OFLIn 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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