Malicious PDF — malware analysis report

Static analysis result for SHA-256 72be432e4839f3a3…

MALICIOUS

PDF

42.3 KB Created: 2020-10-30 16:43:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 8ba6278aa8d9b4207062f176d180c4db SHA-1: 1c81070fc2266fad007745c2cb8075f45eb71560 SHA-256: 72be432e4839f3a3899703d73ccc0664182047d4182638b71ca6790d5f8e01f5
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/wb?keyword=spelling%20practice%20worksheets%20year%206 In PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://milavigik.weebly.com/uploads/1/3/2/8/132815866/9aa6f002e76.pdfIn PDF document text
    • https://wesujugureju.weebly.com/uploads/1/3/0/8/130874517/masiwixolarapil.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/543e8bab14b.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/mozufozow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tulosa/the_young_veins_members.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/458982d6-906a-4ab3-a8b1-b48a89164aa4/rozinakekana.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/winopepesid.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/69488514650.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/31096758806.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7cc8a0f-4665-4e53-a3aa-369bb15f1047/71100053862.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_off00006558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6558 5712 bytes
SHA-256: 854d7a9016b601fe88f7b5c673407d94e514710c05a70bef84b671c75422a304
font_01_sfnt_off000078dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DC 10448 bytes
SHA-256: 196998913932b31f58f92eb88d695912cdfd92c764862ed1649e71900e9e9588

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