Malicious PDF — malware analysis report

Heuristics 5

• 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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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://trafffi.ru/123?keyword=7+pros+and+cons+of+chocolate+milk PDF link annotation

  • https://lilikisewusufod.weebly.com/uploads/1/3/2/6/132682662/9126176.pdfIn PDF document text
  • https://xekexudaxojow.weebly.com/uploads/1/3/4/3/134365032/801727.pdfIn PDF document text
  • https://diveziriluro.weebly.com/uploads/1/3/4/4/134447321/bolipawapu-fazitemisepa-vezib-tesat.pdfIn PDF document text
  • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/duwukijolakep-sasubidexup.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://s3.amazonaws.com/jebupofedijakuk/nigeria_snacks_recipes.pdfIn PDF document text
  • https://s3.amazonaws.com/jixerubowi/guvusalik.pdfIn PDF document text
  • https://s3.amazonaws.com/xurixado/auto_generate_link_info.pdfIn PDF document text
  • https://s3.amazonaws.com/jadudusujuje/55707022372.pdfIn PDF document text
  • https://s3.amazonaws.com/lovetijif/41391117577.pdfIn PDF document text
  • https://s3.amazonaws.com/putelekireza/super_mario_3d_world_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9476a860-7389-44e7-8d9f-71f221d34502/70234230771.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files2/netipadonidurozivogafal.pdfIn PDF document text
  • https://s3.amazonaws.com/susopuzupure/lalinovatokavoni.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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