Malicious PDF — malware analysis report

Static analysis result for SHA-256 478b8d77a0a979e0…

MALICIOUS

PDF

31.6 KB Created: 2020-11-06 10:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 4c360459e97198f8a07c54f10ddba45f SHA-1: f870db20b0db44ead0f782286c28295a3d6de48f SHA-256: 478b8d77a0a979e0d8f68c10d66930ae437ddd00f314f571febc7142caa90bb1
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?keyword=viking+fantasy+team+names PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385410/normal_5f99030f4a9b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413468/normal_5f9f9d4866060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421209/normal_5f9dbb83a2ff6.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/fajeloninesitel/english_speaking_practice_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/zojezegomusepima.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/rosy_finches_in_colorado.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/an_astrologer_s_day_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/99449799964.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/asientos_contables_ejemplos_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/telugu_bible_app_download.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/nhs_lower_back_pain_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/download_light_novel_arifureta_bahasa_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/makalah_asidimetri_dan_alkalimetri.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_off000040ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40AD 5088 bytes
SHA-256: 29f7ce74993732b3fd4cc6c9dd88161da12d08fbe9c57d65c4f4a21b2a20f4d5
font_01_sfnt_off0000520b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x520B 9432 bytes
SHA-256: a1b1805dc6c61839a1d2ca1fb55b73b9a828ec42b8ed5ccc81c19f9abd4f2344