Malicious PDF — malware analysis report

Static analysis result for SHA-256 425b31c10a9cd7f0…

MALICIOUS

PDF

46.4 KB Created: 2020-10-17 15:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: ffdd22fccebd763a7b6996dbf7d31ec8 SHA-1: b280644a2904b5f25f1cf786bd0bbac633292a78 SHA-256: 425b31c10a9cd7f0fa0f1bfb995e226a7b377a8587323b919fbad2f02be76bb6
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/123?keyword=market+leader+elementary+3rd+edition+pdf+chomikuj In PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/nazobupe.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/199877.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/6818303.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/6805005.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/6924687.pdfIn PDF document text
    • https://gepobuxew.weebly.com/uploads/1/3/1/0/131070920/jejisulukajur_rapobebusegavel_xizago.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/c25f730.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/wimizuniku.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/93049f265a0000.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/belapigojat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8898/4222/files/ge_vivid_7_pro_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1393/7064/files/club_penguin_oasis_igloo_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3011/7526/files/25327965747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9173/6741/files/notawobidikabukawutobike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/stuart_from_mad_tv_memes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7897/8210/files/67099274161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9377/7302/files/biluniporad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23ccde3a-ff0c-49ac-8e75-f48ac8278208/pamawederep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9126f76-a6a9-46d2-a48f-11e6535b8044/70157836908.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/568bde5a-788d-4237-8f98-a63163350ad3/9761234647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fc843c9-f47c-4b63-92d5-a9101b365ccc/gaxelabajisiwo.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_off0000640f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640F 5628 bytes
SHA-256: 3110688533ec434a1e0b2fe12c1cec76f1ae3993c6207dd0afa00b6d82f308d6
font_01_sfnt_off00007720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7720 19792 bytes
SHA-256: caee1625af2798f3ba02e0c97d6614b4c2fc8954af6922d6ae4440de3789e023

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