Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8d76f72031c969…

MALICIOUS

PDF

38.8 KB Created: 2020-10-12 21:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 486a4ef3e90657e2de0231babe86e9e9 SHA-1: 6fb67978f61c6366ec2779294d84e06deee7b823 SHA-256: 2c8d76f72031c969843e629f79da442fbdfe2919ee5159dbff28e70544eb186f
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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=anticoagulation+guidelines+after+orthopedic+surgery In PDF document text
    • http://rebikasez.baieslings.com/uploads/1/3/2/3/132302842/a6a58cc.pdfIn PDF document text
    • http://files.obxcoachtodd.com/uploads/1/3/1/4/131454207/bavozunisif.pdfIn PDF document text
    • http://puzemevew.whiskersnwagspet.com/uploads/1/3/1/8/131856373/cecbaf.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/748b6b65-727c-4a59-9bc2-98f49388cf53/jupekekudavekuwofefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81ee52d6-047d-41a1-a74e-deb4b28c70a1/28695868820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4669/0712/files/nekunaputewokuwudif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9471/1203/files/kohi_movie_apk_download_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3429/6988/files/fodidojoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7814/7491/files/18403838983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7042/7814/files/los_atributos_de_dios_a_w_tozer.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_off00005911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5911 5508 bytes
SHA-256: e3e87c6d667a38253bcb4080363243172612017302002bc0dcb2201c212b3cdc
font_01_sfnt_off00006bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC7 10068 bytes
SHA-256: 2e4a41ef5b0d29a0ec2af5b73a0be5c9f1f8acc22705af15b09ba093880943cb