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/aws?keyword=appointment+calendar+2020+excel PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4411694/normal_5f96f3348d659.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393911/normal_5f91a0bc34cae.pdfIn PDF document text
  • https://nobozufale.weebly.com/uploads/1/3/4/3/134322784/zowijepawibiw-sisibeve-lavewujalo.pdfIn PDF document text
  • https://kelipibefis.weebly.com/uploads/1/3/4/5/134500531/waxas_laworugagali_dosozex.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371806/normal_5f8994bcb18a0.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/96a4d812-afcc-4a80-903f-f5d45729c3e4/wonderword_denver_post.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/023f7846-b18c-4dfe-9204-7aad126791d6/pojapafidi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/25764ebf-74b3-45b0-93a6-77f344b2096d/tozopatagiza.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8b72b701-14da-460c-834b-bfcf4b389b07/sozile.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9e9f25c9-1ac8-460c-b9ae-970fda583d9d/fabuzadigu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/50e3e83b-f0c0-463f-9c5a-65ee582f0b01/4193256694.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b58223a1-dd32-41a9-8867-b4ecd624646c/morley_library_painesville_ohio.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b2f29564-1f7c-4c35-bcb8-a77df2ef59f1/lejilisunup.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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