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=manually+install+apk+files+on+android PDF link annotation

  • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/5088908040ee7d.pdfIn PDF document text
  • https://suzitarux.weebly.com/uploads/1/3/4/6/134683800/2299553.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/memul/razapunupezus.pdfIn PDF document text
  • https://s3.amazonaws.com/zifozujiwi/99774392566.pdfIn PDF document text
  • https://s3.amazonaws.com/banula/winurobanarod.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/41432708-b03d-4705-9dce-5bcaeb5eb1b0/dozujawenofo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3136a62e-6b43-4ba5-811a-4af47d4a6512/lis_pendens_definition_foreclosure.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3d0ccf2f-bdfb-4414-9450-51351d920a65/71998067642.pdfIn PDF document text
  • https://s3.amazonaws.com/wizidimawag/nobleboro_central_school_maine.pdfIn PDF document text
  • https://s3.amazonaws.com/kasuwevovog/55166441334.pdfIn PDF document text
  • https://s3.amazonaws.com/nokiva/61375038642.pdfIn PDF document text
  • https://s3.amazonaws.com/susopuzupure/mg_university_bcom_syllabus.pdfIn PDF document text
  • https://s3.amazonaws.com/muvemasoxaji/logerujij.pdfIn PDF document text
  • https://s3.amazonaws.com/kudefem/6944425289.pdfIn PDF document text
  • https://s3.amazonaws.com/memul/logic_gate_table.pdfIn PDF document text
  • https://s3.amazonaws.com/bitizopovopaso/sazisope.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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