Malicious PDF — malware analysis report

Heuristics 5

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• 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://cctraff.ru/123?keyword=lp+efusi+pleura+2020+pdf In PDF document text

  • https://rigonabex.weebly.com/uploads/1/3/1/4/131483185/5d3cb284.pdfIn PDF document text
  • https://bitekiparoduj.weebly.com/uploads/1/3/4/0/134017536/7089296.pdfIn PDF document text
  • https://tabuxeniki.weebly.com/uploads/1/3/2/6/132682737/7201152.pdfIn PDF document text
  • http://www.opentle.orgIn extracted file (stream_005_off0000bfde.bin)
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000adfc.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000adfc.bin)
  • https://cdn.shopify.com/s/files/1/0437/2663/5157/files/vanubexigobililob.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/word_to_converter_online_high_resolution.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/8015/5289/files/marvel_one_shot_item_47_full_version.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e1d8057a-d124-49a0-a695-df65921ce807/keverutosupawosuzuku.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/299ad76c-1628-4b83-bf3d-388926fff100/pawupogimakowugozaz.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9b3c34aa-76cf-469a-9c9a-0167db6d8ec2/mujowidexip.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3f327c3b-a195-4908-ad0a-aab53fac7c30/tolidixomadavaz.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5f8b6f87-a1bb-4d2b-9ef5-335df0528484/lugasupe.pdfIn PDF document text
  • https://s3.amazonaws.com/pujirageg/poboxizojumobivajatutibet.pdfIn PDF document text
  • https://s3.amazonaws.com/wonoti/labobojomavivikiwoda.pdfIn PDF document text
  • https://s3.amazonaws.com/fasanag/application_software.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/499f9f32-cb5a-49a5-986d-3318295e4dea/49985910642.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/db086392-fd25-4cb9-87fb-278e3af4eedb/bavitubinapu.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://www.gnu.org/licenses/gpl.htmlIn extracted file (stream_005_off0000bfde.bin)
  • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off0000adfc.bin)

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