Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d1acaeb8eb50a2…

MALICIOUS

PDF

82.4 KB Created: 2021-04-28 03:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1204b362fa96cd150db7f8302ee2a721 SHA-1: 71bc10ddbc071e7e6a5c2d4a763eaa3df2b8af51 SHA-256: 41d1acaeb8eb50a2058f98a78e57d2b7b647dc94bec8e77bc6e11a942db018c7
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://jacksth.ru/strik?utm_term=introduction+to+calculus+and+analysis+volume+ii PDF link annotation
    • http://zizodoroluxonaf.sportsontheweb.net/68738833171.pdfIn PDF document text
    • https://japejezapunat.weebly.com/uploads/1/3/3/9/133999519/8697219.pdfIn PDF document text
    • http://supusatode.sportsontheweb.net/oracion_al_arcangel_san_miguel.pdfIn PDF document text
    • https://pomaxobizo.weebly.com/uploads/1/3/1/1/131163853/7c4b4.pdfIn PDF document text
    • http://wobufiparezir.medianewsonline.com/76369933906.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/dr_brown_microwave_steriliser_dimensions.pdfIn PDF document text
    • http://lovawadawawo.iblogger.org/xojafabogazukenedila.pdfIn PDF document text
    • http://pakupuxojopef.getenjoyment.net/rukapajijuwofisuvifi.pdfIn PDF document text
    • http://waguzeb.66ghz.com/portable_spot_welding_machine.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://pimoxonevuwewax.atwebpages.com/59031572404.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/rababowezorudi.pdfIn PDF document text
    • http://dezabefuzureb.rf.gd/action_bar_menu_android_studio.pdfIn PDF document text
    • http://ramapenutizawa.epizy.com/epithelial_tissue_lab_report_8.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/sodir.pdfIn PDF document text
    • http://kizevasuxogu.rf.gd/triangle_angle_bisector_theorem_worksheet.pdfIn PDF document text
    • http://naxefugoxodikow.atwebpages.com/44387631932.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/pilates_iq_reformer_reviews.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_off0000f67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67E 5068 bytes
SHA-256: 66109919084b43449f6feea7a97ffff794c1afaab84bb93f6769fd61aa3ebfa2
font_01_sfnt_off000107a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A2 11252 bytes
SHA-256: 3bb908605738a857e276b804ca8426db7c2c95332ccad8a413ca843538315c81
font_02_sfnt_off00012e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E0C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361