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.
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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.
• Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
  PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
• 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=faits+amusants+sur+la+tamise In PDF document text

  • http://nuneni.iqjointventureholdings.net/uploads/1/3/1/3/131383323/kolezufu-toxupiz.pdfIn PDF document text
  • http://files.paradisemountaincharlottesville.com/uploads/1/3/0/7/130739454/waraxa.pdfIn PDF document text
  • http://files.fancyutahyorkies.com/uploads/1/3/0/7/130775734/lamoriw_vuzapase_gadaj.pdfIn PDF document text
  • http://muxovubam.angiessnowhut.com/uploads/1/3/0/7/130775766/466b004af4a.pdfIn PDF document text
  • https://site-1038980.mozfiles.com/files/1038980/wawejobekutawezobo.pdfIn PDF document text
  • https://site-1040669.mozfiles.com/files/1040669/5451107567.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000897e.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000897e.bin)
  • https://uploads.strikinglycdn.com/files/81c09070-c183-4fd8-ac11-2711582aade3/42765130220.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e4d5b4e2-83ec-4b7d-bb65-3a668903ea83/40125614156.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f13664e0-2981-4327-a632-3cfc57ccf306/85252071332.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/799bc5a2-c405-4b38-9406-d49b8f79cdbe/53600269201.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9aef13e6-5422-430f-b790-193bd83f3c00/22349904067.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3b9c4fe7-0c0e-4246-b48a-8e8c33de64aa/40637456801.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8e792cde-5f9f-4c11-be09-0c0323099ed0/21816906109.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_00_sfnt_off0000897e.bin)

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