Malicious PDF — malware analysis report

Static analysis result for SHA-256 7825c0da4e547a94…

MALICIOUS

PDF

48.5 KB Created: 2020-10-04 13:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 0c8af6fb590a60fe1a9ae3fafb54984f SHA-1: 8c91466217fb43c5b68ea9e0d4fa1f17bfba4f3f SHA-256: 7825c0da4e547a9434050268bfb46c9a4d930c01293bfa10c04150334efaaa86
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/strik?keyword=comodato+d%2527uso+auto+pdf In PDF document text
    • https://site-1037152.mozfiles.com/files/1037152/fimovajiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2126/0184/files/49207351065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/37934113693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8774/1599/files/notice_to_vacate_california.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6e7a535-00f7-4c93-bdc1-a7a37d2f5c63/77671811611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6085bbe6-924e-45ac-ad11-b1b0e588b36c/83311871149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7c2aa06-ed79-4477-bcc3-8a0fe62045fa/dujarolidatulivigak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ff876d-f372-4ba4-842c-be06fd12e5a9/tezexorelipifodinodesedo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/520a2e3f-fa8b-4151-84f5-b29beddd9407/midepuxidimexazit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b81f4457-235d-4ff9-b18d-01c4d796e462/73768941861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9c70c08-69af-4035-be1b-5ac9769535e1/24489996815.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6932 4724 bytes
SHA-256: db9e5c1896036b81d63f4141529a23a7bae108eb0daf56024763260d2110ff2a
font_01_sfnt_off0000794e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794E 14392 bytes
SHA-256: 890ebe528a3b2301adcdbdb6b777d054b366db652e31a4fef22f02618bfd0e09
font_02_sfnt_off0000a536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA536 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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