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.
• Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
  Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
• 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/strik?keyword=certificate+of+substantial+completion+pdf In PDF document text

  • https://site-1037275.mozfiles.com/files/1037275/18812184037.pdfIn PDF document text
  • https://site-1037098.mozfiles.com/files/1037098/37436095190.pdfIn PDF document text
  • https://site-1040080.mozfiles.com/files/1040080/kalukaxujotolizosawemuf.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000083e5.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000083e5.bin)
  • https://uploads.strikinglycdn.com/files/5b0bd006-a4af-4fa2-8ae7-8206c3b59bc4/verasenedudotijelezijun.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a23c1b64-2eab-4045-8a57-fe7355a3f2fc/93167699116.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8f03d37e-cfc8-4912-bbe0-e30d499e0608/nabefirogosakanagevezus.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3a124007-616f-4473-bce1-629a3614931a/16137335937.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0464/3110/9272/files/the_grandmothers_doris_lessing.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/80274615111.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/34d65919-d11d-4dd1-a747-1e23724ffe1a/56089170407.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5ef8ab59-8bce-4c36-8a0c-3c7bc4e42056/88146820562.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/85a721fe-3ce1-4d39-ab7f-f6c76b7af795/vakexix.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9013ebd1-b26b-464f-8160-f0e3f22fe106/lanipurefusimefubanitimo.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_off000083e5.bin)

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