Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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
• MFA / one-time-code harvesting lure high SE_MFA_LURE
  Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
• 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://ttraff.com/pify?keyword=student+finance+secret+answer+reset In PDF document text

  • http://files.snail-loves.com/uploads/1/3/1/4/131452817/2250485.pdfIn PDF document text
  • http://files.heartofyogafalmouth.co.uk/uploads/1/3/2/6/132681576/5edfd42c64db.pdfIn PDF document text
  • http://duluwumeb.extendedlengthsessex.com/uploads/1/3/1/4/131412181/29174e87.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/6318/0454/files/neuro_physiotherapy_exercises.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/retigijuxawalolipenolovaw.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0448/9897/5899/files/bengali_calendar_1424_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/17403204767.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/2880/6807/files/15903981991.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/cell_organelles_and_their_functions_quiz.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lonub.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/20109349052.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/6667/8696/files/71630395450.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/types_of_networking_cables_and_connectors.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/google_sheets_script_as_csv.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/4598/5192/files/sony_message_apk_mirror.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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