Malicious PDF — malware analysis report

Heuristics 6

• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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.me/123?keyword=chinese+handwriting+recognition+android In PDF document text

  • https://cdn-cms.f-static.net/uploads/4389085/normal_5f907e6e66688.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375896/normal_5f8f3cf24810c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375890/normal_5f89d2b513560.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4417319/normal_5f952aae85b71.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368996/normal_5f883946e5b10.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393752/normal_5f92115572ade.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369322/normal_5f887fc3cd534.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370528/normal_5f88ce72c8d86.pdfIn PDF document text
  • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/2870059.pdfIn PDF document text
  • https://kowadesilokawu.weebly.com/uploads/1/3/4/2/134265693/tedide.pdfIn PDF document text
  • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/b628c54eef4e3.pdfIn PDF document text
  • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/wagetigob_baweduwoz_xoxupuv_nifox.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00007f33.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00007f33.bin)
  • https://uploads.strikinglycdn.com/files/c0d40813-3bd6-4fd8-9070-3cafaffe5b6c/kigufadofifujuvoko.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/355bcada-7905-44ac-993b-7787e0a9d9c1/60122641241.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8228fd1b-7a3c-4a2b-8b8c-4303cee31d8f/23610462240.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e317eb3f-b070-49e9-b46b-fb02220e3158/37178610963.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0440/8590/3525/files/gamepad_games_apk_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0502/5421/7388/files/87687948416.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/8326/2869/files/22770901982.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6fb80911-22ce-4797-8f3e-56a0ac270de9/writing_the_natural_way.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/48a6ac8e-b382-448f-98c1-826fbc568348/siwufoninuserasi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/57666c83-d272-4304-ad3c-0f9ae534f61f/zumasab.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/61040019-9b65-4fe9-a155-a40c28385881/46775609284.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_01_sfnt_off00007f33.bin)

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