Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b28b08668af4c4b…

MALICIOUS

PDF

80.8 KB Created: 2021-03-16 18:19:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0fd5d9e766f83fc0bad992d12530d0e3 SHA-1: b9eb6ea91ea618bec021ad4d431be42a76338e66 SHA-256: 6b28b08668af4c4bb44e7323f8cb2fc5818166e6525c8bdad50974f7f5f6c341
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://mezovuduw.ru/wix?keyword=aaai+2020+rebuttal+deadline PDF link annotation
    • http://veronaital.space/jifumalirkln0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453550/normal_5ff69d741fa6c.pdfIn PDF document text
    • http://artrosil.xyz/46437374306477q4.pdfIn PDF document text
    • http://pusikoxelumide.iblogger.org/brush_pen_alphabet.pdfIn PDF document text
    • http://migerov.xyz/agua_para_chocolate_frasesr04ge.pdfIn PDF document text
    • http://gedawirij.66ghz.com/chopin_nocturne_no_20_sheet_music.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494674/normal_601c8caa512a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461523/normal_601bd0b3f09e0.pdfIn PDF document text
    • http://pristav.pro/free_games_dx_ball_5frlsg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458833/normal_5fc759e966230.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kitasavino.epizy.com/fault_tree_analysis_excel_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04729844-dcff-44df-ab85-7e2a851b80bf/what_are_the_different_drawing_tools.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dfafb58-836d-4b12-8453-6571b8d3062c/11698448577.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b2f3330-8d24-4925-b31a-4dcd89258a20/ap_human_geography_exam_practice_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/920f8cf1-cfa9-419b-9ea7-ee19c7505976/convert_audio_track_to_midi_ableton.pdfIn PDF document text
    • http://mutaloliz.epizy.com/mazudadopesatuzevi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3754314a-ac87-45d6-aff7-510e9b5068aa/dresden_files_tv_show_reboot_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7015da5e-0ef5-44de-8ba0-65cde8a18aef/dutedemonojokaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/429a80c7-4285-40ec-9aaa-5421839d9dcc/fossil_q_explorist_gen_5_smartwatch.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F4 4816 bytes
SHA-256: 383d4f04d43775bd6bbdef1490a7fa400bf53309ebf5499c29fef412cf24bcde
font_01_sfnt_off00010248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10248 11072 bytes
SHA-256: 343308d42ac6736c37e22dd8a34bd397681dbcfd9183779cdb793532d1d77ea4
font_02_sfnt_off000127ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127EC 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e