Malicious PDF — malware analysis report

Static analysis result for SHA-256 4780abbbe510f3f1…

MALICIOUS

PDF

39.5 KB Created: 2020-10-28 22:40:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: f50d0b5d824f066960bfc6ecffd665b7 SHA-1: c4e26f588b0dd3d42f1e77a724044cc9649f3d7c SHA-256: 4780abbbe510f3f18b0aa04975641bc473dccfb99f6bbf1f150ff1ca17f257fd
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=word%20formation%20nouns%20and%20adjectives%20exercises%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406455/normal_5f98c491c712d.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/mikoxoneguja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387031/normal_5f8e8b5d2c1c4.pdfIn PDF document text
    • https://nukubutoti.weebly.com/uploads/1/3/2/3/132302768/5d3038e96b3fc.pdfIn PDF document text
    • https://vefozifus.weebly.com/uploads/1/3/4/3/134382693/2dde1ed6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383678/normal_5f95658676598.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/vomupori.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370525/normal_5f9034ccb1fa0.pdfIn PDF document text
    • https://wezogefizu.weebly.com/uploads/1/3/4/2/134234847/642086.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/belopudevuzuza/blockchain_game_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/dijojoxotuxutoveloge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2e6c5a3-8738-4184-822a-4618d080989a/montage_membrane_carburateur_walbro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d7162bc-8d8f-4adf-8a98-cdd7f7b44651/lotuloluwifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e9dd441-7787-41b3-85c1-7216aac30b10/49704063419.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a0c79b-5bbe-4d69-bcdc-c16e7ae1a513/84598516349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74c8208f-56bb-443d-8f2c-438d2c96950a/88962133239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/625cba2b-2a73-481e-9f45-cea22864f2ec/71683291134.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/carlos_drummond_de_andrade_amar_se_aprende_amando.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/besos_de_chocolate.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/calisthenics_workout_at_home.pdfIn PDF document text
    • https://s3.amazonaws.com/wifozuxeku/fobuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a5b5b19-f261-40b0-a9c2-ae1fc20595c1/el_vencedor_esta_solo.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_off00005aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAE 5484 bytes
SHA-256: 765ff5d7fde24781fd3100995768a0243457a165f30c130dfa4b9202b3c9af43
font_01_sfnt_off00006d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D58 10264 bytes
SHA-256: d82e2820ce525f2a8393320f7755f3f3bd48b12301c447a42acaf12251705f5a

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