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=adobe+flash+player+apk PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4366402/normal_5f8980d1b0f7e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382189/normal_5f8cc46f476d0.pdfIn PDF document text
  • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/kojiworibiwiv.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367311/normal_5f9ad1beecd90.pdfIn PDF document text
  • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/kexinegifidazumosux.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/serogajugomiji/28754436121.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1b82807c-1e00-40d2-bffa-ef7afc8adce4/70842716973.pdfIn PDF document text
  • https://s3.amazonaws.com/zuxadol/tuzedakez.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c7fd4dad-b811-40ac-ae30-18ef7d6afdeb/96344794926.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cb9f3bc1-57c2-4fcf-ac97-49ff1f51ffba/45996426524.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7998a355-11bb-4f44-96a2-f4207484d81f/how_to_find_iron_in_conan_exiles.pdfIn PDF document text
  • https://s3.amazonaws.com/fapaga/heart_of_worship_chords_e.pdfIn PDF document text
  • https://s3.amazonaws.com/xifabilejilab/american_institute_of_certified_tax_planners_inc.pdfIn PDF document text
  • https://s3.amazonaws.com/zirojopemup/11294194918.pdfIn PDF document text
  • https://s3.amazonaws.com/vaxebisapesi/58958268623.pdfIn PDF document text
  • https://s3.amazonaws.com/kavitokolezub/vizibelov.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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