Malicious PDF — malware analysis report

Static analysis result for SHA-256 478324f636d718e7…

MALICIOUS

PDF

42.5 KB Created: 2020-10-06 20:06:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 79843ca5e4fe44b100b2e7c9a790ec8a SHA-1: dc8abda2052c690188de2d17e64a3094cb48bd10 SHA-256: 478324f636d718e7eb1a4a2c19ab118edb59db982d9c57d113d6bc1626007da7
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=qt+stylesheet+classes In PDF document text
    • https://site-1037191.mozfiles.com/files/1037191/medaliwevora.pdfIn PDF document text
    • https://site-1037143.mozfiles.com/files/1037143/89310661457.pdfIn PDF document text
    • https://site-1036824.mozfiles.com/files/1036824/51694299272.pdfIn PDF document text
    • https://site-1039496.mozfiles.com/files/1039496/sepezo.pdfIn 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/a8fa239f-d6c7-4202-a3e0-0e7152f8a4c7/41028416346.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f7913f5-fb5c-4144-9226-b00dfdafa3fc/munazominofifezasaluvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc241420-7a08-4c98-b5b3-c06b2714d513/miwenivapapilojajevud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6123/4849/files/grand_canyon_of_pa_hiking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/ticketmaster_avenged_sevenfold.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6457/4620/files/pa_inspection_stickers_windshield_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21078366-1cb6-4da2-a858-2b19759848e5/nudavolobevavamenekokan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6fd3ea5-0909-49c4-9606-4f884d300749/50234469433.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d4a91f1-02f3-487a-89f7-2625fe3321dd/34402279232.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_off0000685e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685E 4956 bytes
SHA-256: 291f918435709105dc592043b27e6a0c6f6c31223b959abcfec16f1b9691c1c7
font_01_sfnt_off00007941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7941 10580 bytes
SHA-256: 2326f717f39e1a09f992ec3fc19dabd06df3599421dd3aab6818fbe491b1f1fe

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