Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• 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://cctraff.ru/123?keyword=fts+2020+apk+and+data+download In PDF document text

  • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/batunaxe-jinem.pdfIn PDF document text
  • https://woliwejimagevin.weebly.com/uploads/1/3/4/3/134319070/8482051.pdfIn PDF document text
  • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/d2c101.pdfIn PDF document text
  • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/8045369.pdfIn PDF document text
  • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/jumosaw.pdfIn PDF document text
  • https://zadavutuni.weebly.com/uploads/1/3/4/3/134343582/pimewowaximaw.pdfIn PDF document text
  • https://bevokelas.weebly.com/uploads/1/3/4/3/134310014/zoferimemun_wilupurigun.pdfIn PDF document text
  • https://kizujaxaluw.weebly.com/uploads/1/3/4/3/134393650/6022913.pdfIn PDF document text
  • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/xitipobopi-ruwug-pozovu.pdfIn PDF document text
  • https://gexumuvebevo.weebly.com/uploads/1/3/4/3/134312536/6625090.pdfIn PDF document text
  • https://midunufi.weebly.com/uploads/1/3/4/3/134387712/napuvu.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388422/normal_5f908f24475dc.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380854/normal_5f8df6ceb2b23.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413987/normal_5f944c8bb08d9.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006b55.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006b55.bin)
  • https://s3.amazonaws.com/remeranexe/80384981900.pdfIn PDF document text
  • https://s3.amazonaws.com/wunupalezozerud/wokozoterezi.pdfIn PDF document text
  • https://s3.amazonaws.com/leguvefu/cell_structure_and_function.pdfIn PDF document text
  • https://s3.amazonaws.com/metubevozisul/characteristics_of_scientific_research.pdfIn PDF document text
  • https://s3.amazonaws.com/vixuwogetiv/xilazofogixugaxazi.pdfIn PDF document text
  • https://s3.amazonaws.com/wilugugo/jajiwoxej.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 extracted file (font_00_sfnt_off00006b55.bin)

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