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.
• 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.
• Macro/content-enable lure medium SE_ENABLE_LURE
  Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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/strik?keyword=file+pdf+chuy%25E1%25BB%2583n+sang+word+kh%25C3%25B4ng+ch%25E1%25BB%2589nh+s%25E1%25BB%25ADa+%25C4%2591%25C6%25B0%25E1%25BB%25A3c In PDF document text

  • https://site-1036680.mozfiles.com/files/1036680/radunomude.pdfIn PDF document text
  • https://site-1036929.mozfiles.com/files/1036929/velisefujadesinol.pdfIn PDF document text
  • https://site-1037864.mozfiles.com/files/1037864/beboz.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000536c.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000536c.bin)
  • https://cdn.shopify.com/s/files/1/0437/5203/0357/files/7989180110.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/0364/0990/files/6111377727.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/1504/4254/files/didorafexatemiki.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0462/1061/3401/files/commando_assault_2_unblocked.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/4409/7176/files/ice_bear_we_bare_bears_cute.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a8e9c686-b794-47be-a0e0-e7e5a9bc698c/4638232997.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0448/4674/3709/files/centurylink_dsl_modem.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/66706455482.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/sagittarius_in_12th_house.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_off0000536c.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off00008e5d.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off00008e5d.bin)

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