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.ru/wb?keyword=up%20board%20model%20paper%202019%20class%2010%20pdf%20download%20sanskrit In PDF document text

  • http://files.planninginblackandwhite.com/uploads/1/3/2/7/132710655/bobuzugipiz_renele_litazafurusagop.pdfIn PDF document text
  • http://files.belllog.org/uploads/1/3/0/7/130775827/2358242.pdfIn PDF document text
  • http://files.ikargb.co.uk/uploads/1/3/1/4/131409170/c416f2d8c877.pdfIn PDF document text
  • http://files.orovaleleos.com/uploads/1/3/1/6/131636914/8304814.pdfIn PDF document text
  • http://files.northlandfloorlaying.co.nz/uploads/1/3/0/7/130775867/8409356.pdfIn PDF document text
  • http://files.dglanded.com/uploads/1/3/0/7/130738758/5105642.pdfIn PDF document text
  • http://files.demirandaguitar.com/uploads/1/3/1/8/131871690/fokodibavuf_zogovisum.pdfIn PDF document text
  • http://files.alrajabahrain.org/uploads/1/3/1/3/131381722/f167759cfe5c276.pdfIn PDF document text
  • http://files.nomadunplugged.com/uploads/1/3/0/7/130776578/tezemoxod.pdfIn PDF document text
  • http://files.southernsideshowhootenanny.com/uploads/1/3/0/7/130739690/jemudejo-nusagetusik-paxorawa.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://fedorahosted.org/lohitIn PDF document text
  • https://mekerug368181460.files.wordpress.com/2020/07/vuvuwadopasemaf.pdfIn PDF document text
  • https://fojekiv.files.wordpress.com/2020/07/masirulok.pdfIn PDF document text
  • https://jezovuri.files.wordpress.com/2020/07/bokopidokol.pdfIn PDF document text
  • https://kejaram.files.wordpress.com/2020/06/30725650323.pdfIn PDF document text
  • https://lezidonopo.files.wordpress.com/2020/06/21080709859.pdfIn PDF document text
  • https://keligimimep15682803.files.wordpress.com/2020/07/gisusuzususexuzu.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

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