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.
• Security software disable instruction high SE_SECURITY_BYPASS
  Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
• 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://cctraff.ru/strik?keyword=office+2016+activator+windows+10 In PDF document text

  • https://cdn-cms.f-static.net/uploads/4365653/normal_5f8abe1523456.pdfIn PDF document text
  • https://nubojubixuxo.weebly.com/uploads/1/3/1/4/131410311/1612591.pdfIn PDF document text
  • https://pesajupamobe.weebly.com/uploads/1/3/1/6/131607203/litovivof_sijomidigeza_favusanoti_nabiwemed.pdfIn PDF document text
  • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/sinafadatumugefuw.pdfIn PDF document text
  • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/ruxozukozuvazu.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/48d7518c-90c5-4f55-a88f-68cb4e8031cc/tutumelud.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/30706bec-2008-4a83-a69f-9d1172933b5b/wajafatuxezunuvuvubixi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2bebf380-5303-4106-9fcf-470141d03d31/how_to_get_bait_terraria.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/20197210327.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0492/2871/0041/files/lean_manufacturing_implementation.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/9933/2516/files/happy_birthday_sarah_jessica_parker.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0479/2955/7148/files/boat_anchor_winch_switch.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b6365930-f445-4e8c-9b80-cbbbb6ef6214/60670684034.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ef895831-7fc2-4309-930d-a5cdb6b97438/lettre_a_un_notaire.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/524c295f-2a09-4042-8037-bfa498041389/67683865535.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fa7cca9c-3d1c-4412-b597-a8ee14b20d47/84657069163.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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