Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8a4e5c6afd0cf4…

MALICIOUS

PDF

54.2 KB Created: 2020-10-10 06:16:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: a8e55a62b6f75415b4bc1a265db971b2 SHA-1: 03fc1b0edb1a4fa1e1cc44dcd1657f6b6aaa6eb0 SHA-256: 5d8a4e5c6afd0cf47dd0147f2659f9b8e0be089e78170e028b34e08913d95987
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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://ggtraff.ru/strik?keyword=minecraft+clay+soldiers+mod In PDF document text
    • http://files.gchmg.org/uploads/1/3/1/6/131606231/bawawav.pdfIn PDF document text
    • http://files.bigkidcollector.com/uploads/1/3/1/6/131637853/1678706.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/8de312c2-13f2-4c6b-8ad4-d94f2637122c/86321125510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e44a7c3-8a95-453e-a90b-20e8d6907d0d/xekatuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2dc868a-26d1-4211-a908-e6f28608b3bd/kedeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f288d09-2dbe-4987-b731-05d3de308519/batibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daa73de8-d381-420d-b48f-c7c350637df9/43175099415.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acbd4d97-ea5e-42d2-be6f-bd76a0a2e688/ruwinuruwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ede1e0a0-ed96-487f-a0fb-7150d47fcaf0/67963339655.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a846352c-9456-439e-a5de-f6a123e365aa/86581069022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8245/2644/files/lego_city_fire_station_7208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6871/8756/files/94768274224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/0601/7692/files/surviving_armageddon_beyond_the_imagination_of_disaster.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9770/2046/files/61642240334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/0558/9920/files/sesosevopurukowegara.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000096c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96C8 5272 bytes
SHA-256: 10f9a42a75bea78d7505ab98692836f4eacddf7877f034456f3245907d81aeaf
font_01_sfnt_off0000a8b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B7 10440 bytes
SHA-256: 2482d64e8fd1bf8d8dadea28cd38798134c52c733edc5ebf27a83ecaffb4a00d

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