Malicious PDF — malware analysis report

Static analysis result for SHA-256 478a37fd12b96e22…

MALICIOUS

PDF

42.7 KB Created: 2020-10-01 03:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 83ad835d39cda2864152cf515d7e2a14 SHA-1: b063518c47da0ba5d814f685d26f0df9a5822afe SHA-256: 478a37fd12b96e220328ed43942ffa6f1ce27b433c5c51415a1ffe75d060d6cf
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://ggtraff.ru/strik?keyword=kerala+hindu+baby+boy+names+malayalam+pdf In 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/12b55cdf-52ed-4eaa-8567-636704dcf92d/mukilogujazuvinexuzimibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bb2a408-4ce6-4d9d-9c62-2d6499de1023/xebumup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49818109-9102-46ba-aa8a-446c9b45af97/jeradas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdb1dc3a-f340-40a7-bb9d-056b45c4d20c/lepaseburikabopovokutav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4ea8c84-76c8-467b-9498-1b29e8eae802/wulupifapesebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2077f80b-ddd0-4de0-8753-789a7f0f69f9/44373720380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bb1919b-fa58-4874-b974-6c0882742d58/sowoxenosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/002cdb95-468f-4936-96f2-b62dfebbc84e/vuwakesebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87a8d5de-bfea-4612-8c10-68f28a981911/jafigebus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a96d75bc-0c12-4c66-a967-1df8de91fdcc/pefapapuwasosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf9575d0-a8b3-46b0-b2b4-2f851b30d556/41215656422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/gojesuseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2915/7272/files/vakuvogapu.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_off000068eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68EB 5492 bytes
SHA-256: 2d5b056182904be55472626d30d3c0f4c3ffd2f27d15d318e4db2e60323c667c
font_01_sfnt_off00007b6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6F 9984 bytes
SHA-256: 394fc2d97fa57b8f5b03e45382f647c3bda98f4de5467549de92f14c43bd244b

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