Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
  Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
• 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.
• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• 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://gettraff.ru/123?keyword=encrypt+and+protect+pdf+online In PDF document text

  • https://cdn-cms.f-static.net/uploads/4371806/normal_5f8927e84b7c2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374976/normal_5f8917a2b7b7f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365553/normal_5f8a7a496d518.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368979/normal_5f87dba4aae87.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005f19.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005f19.bin)
  • https://uploads.strikinglycdn.com/files/eb682877-1477-476f-9754-b9ad71d0c0cd/80815055409.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/38fdeeb5-baaf-4852-b1b6-ad695d65fea3/tewabosuluwovirox.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0495/5160/5912/files/kuwobapamakitelazebekuxu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0477/5998/2748/files/60536833060.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/8081/9881/files/83043434104.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0498/1859/9579/files/boron_11_valence_electrons.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/1969/7303/files/antioch_community_high_school_yearbook.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/1805/0472/files/let_the_right_one_in_book_summary.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/delete_twitter_history_android.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5c03e8e8-58ac-4530-8391-e74e6e8d00cf/81573323213.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 extracted file (font_00_sfnt_off00005f19.bin)

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