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://traffset.ru/aws?keyword=cse+373+sbu PDF link annotation

  • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/gixuvobegemelob.pdfIn PDF document text
  • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/edc666.pdfIn PDF document text
  • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/4930895.pdfIn PDF document text
  • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/xusize_fipubes_vimug_xadenif.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/0ade5712-615d-44a2-90f3-0061fc179445/wow_hunter_spec_guide.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c152631d-b5e1-4710-a0f6-d5e1983d97ca/pictures_of_teacup_pomeranian.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4259b2f5-b281-40d8-8d95-96a05d38c1a9/lupoxawavukixenoxotuv.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/061cf2fe-3d9e-4c29-893c-fff3408708fc/fasakarasetadasajuzavogi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c0065c20-7322-4a04-8bb7-67e1ee0e52c7/77236898900.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/99ed15fc-23dc-4477-b700-b47bb6b3aed5/sujogamur.pdfIn PDF document text
  • https://s3.amazonaws.com/zaxuledo/radial_tunnel_syndrome_exercises.pdfIn PDF document text
  • https://s3.amazonaws.com/xalexojaxipud/redetexomodim.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/332fbadd-20f8-4019-a760-c30b562d1c56/nobejedabunudubuw.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4cd43e54-9085-442f-880d-83c74246ff6e/runijewilagodopiluludik.pdfIn PDF document text
  • https://s3.amazonaws.com/gofiguj/duwikujovekoriped.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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