Malicious PDF — malware analysis report

Static analysis result for SHA-256 478e4d2da3f29aff…

MALICIOUS

PDF

39.7 KB Created: 2020-10-07 17:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 7b9d00b04b572940f08b89d6c48cf8ac SHA-1: ad770c5a84600ff3f9954896e0ade36f3b48f4e2 SHA-256: 478e4d2da3f29aff989040f5ef91c5ff5819b39f9c9e87d193888137b7fe5957
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=chandelier+mp3+download 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/18239f60-215f-400d-a057-4996189b1696/wafaberojujat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc901aba-f9fa-4a8f-80fb-d3216b063fac/82481676824.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/365b212c-33ed-433d-81c3-e67131392242/mojezewofis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da788bb2-4f76-4a1e-a09c-d742dc11990e/72103054126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/black_magic_symptoms_in_bangla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1016/5416/files/abbreviation_for_monsieur_et_madame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/lipipopex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/watagile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0846/1470/files/lugerufumajufuvomen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4906/9991/files/air_transportation_a_management_perspective.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6258/2693/files/betty_boop_merchandise_nz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/6941/7888/files/65520279798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/buvidolesokijasorukejibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/2780/7646/files/harvest_moon_new_beginning_bachelors_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1479/1069/files/john_nes_emulator.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_off000059c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C1 5184 bytes
SHA-256: eba48d4ea885c6e7c1dc7210b6bedd8f7d1927833755d9cb63e58f583712497b
font_01_sfnt_off00006b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B41 14032 bytes
SHA-256: da4019647c67cb13345426f9db83456090dad38ac5ce74ae833ef76fd5a47f26

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