Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd748a9af9b76ca3…

MALICIOUS

PDF

36.9 KB Created: 2020-10-28 11:53:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 623c772d201347542a2d1d5f37ce1925 SHA-1: c969b5c6a4abe46d1a6e311e339025d220598844 SHA-256: cd748a9af9b76ca3f925487fea20b830178254f62df796338efef8e91264ebc5
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://ggtraff.ru/strik?keyword=grind+me+down+lyrics+gacha+life In PDF document text
    • https://sexozorojupur.weebly.com/uploads/1/3/4/3/134390270/25f5b9e0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387061/normal_5f944ca04ff31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408992/normal_5f94de85599d3.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/9670698.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5f93b7d8e2f58.pdfIn PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/tetokesajemidop.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/1/0501/3759/6085/files/toyota_corolla_fielder_2020_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/18751298584.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/maytag_bravos_washer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8f8094f-21bc-4313-a312-46141001fb2d/pedagidof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/967e2b35-efc7-4fd0-878e-15c4139bedec/karak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/351cb1ee-f1e1-4178-8ff3-7630494b7da0/mor-flo_water_heater_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5839237-557f-4dc5-9524-a135066ea25c/rafupupagabuvupebawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7931/7701/files/all_android_hacked_game_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/free_translate_document_from_french_to_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1773/0713/files/vitoruluwabef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3366/files/99303097157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e981c20f-d049-4027-bdce-595f60fc3af8/31782415073.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04cf8c38-e4da-4d3a-b438-a5aaca2f137c/56123795856.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/385e6ea3-8b9d-4049-a9ce-62d95d1f4a76/sipox.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/nijarevote.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_off00005077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5077 5660 bytes
SHA-256: fa41aa6d238ac3277f67be9c3fe3875cf1601236d718e79fb92a18aa2cb9cd64
font_01_sfnt_off000063aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AA 10180 bytes
SHA-256: 644d3d307acd2a1c75f004cf90dfa80c9ad5224b48d3bdf78c87cd284157ca15

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