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.
• 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.
• 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=mechanism+of+antioxidant+defence+system+pdf In PDF document text

  • http://saxugu.reacheproject.com/uploads/1/3/1/4/131453574/vavoku-bumopo-sofekibugalage.pdfIn PDF document text
  • http://files.futureslps.com/uploads/1/3/1/4/131406701/dapomawukasuwupip.pdfIn macro / runtime command snippet
  • http://rubeduve.thezhanggroup.com/uploads/1/3/0/7/130776445/61f17.pdfIn PDF document text
  • http://files.keithdeininger.com/uploads/1/3/1/1/131164204/repatoxisip_butivebana_wawugirizowog.pdfIn PDF document text
  • http://saxugu.reachepIn 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/1/0428/0506/7943/files/born_on_a_tuesday_elnathan_john_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/96251789998.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/7272/4900/files/powershell_split_string_into_array.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/party_popper_emoji.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/6717/8134/files/5759501109.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/8708/5220/files/buburuvaxubux.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/2388/4711/files/dikilesezulumukavupinej.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/nuxunaninuzuralij.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/8819/1396/files/63987933000.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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