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.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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://ttraff.cc/pify?keyword=c%25E1%25BA%25AFt+pdf+b%25E1%25BA%25B1ng+foxit+reader In PDF document text

  • http://wimubun.stonecomfort.com/uploads/1/3/1/3/131384635/c3999cbef.pdfIn PDF document text
  • http://files.theamericancurlstandard.com/uploads/1/3/1/4/131453259/aaefbebca.pdfIn PDF document text
  • http://files.condzellasfarm.com/uploads/1/3/0/9/130969555/97c8dd5b0b0479.pdfIn PDF document text
  • http://files.cvdeveloper.com/uploads/1/3/1/4/131454012/3663858.pdfIn macro / runtime command snippet
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://cdn.shopify.com/s/files/1/0435/2812/6618/files/21027530022.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/kp_astrology_books_in_tamil.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/2092/7644/files/acids_and_alkalis_worksheet.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/dukaroxedebunuxof.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/9177/7952/files/manual_roller_bending_machine_project.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/96853604714.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/8044/0213/files/autocad_2020_manual_cz.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/1870/6341/files/rilekor.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/1061/2635/files/78183251032.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/tomefudivijupazog.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/93196408910.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0446/6756/8291/files/history_of_taj_mahal_in_urdu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0443/3071/3244/files/wonderful_christmas_time_sheet_music.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/2992/8872/files/soburaki.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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