Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b668ce4c70fe985…

MALICIOUS

PDF

76.2 KB Created: 2021-10-26 20:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: ec8ca7a727693c87f26e4e1b5eacd3ba SHA-1: 867e40c3e61beaa8467ce1a6cc66362904216097 SHA-256: 2b668ce4c70fe985c07b1f1f336cea6f19a1af77bb9a43878e7805430843dd5a
74 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://holidayinntorino.com/userfiles/files/puxafewomafijujusikuk.pdf In PDF document text
    • http://timandlor.com/userfiles/file/javukovaferu.pdfIn PDF document text
    • https://cometgroupinternational.com/ckeditor/ckfinder/userfiles/files/pamobewajeso.pdfIn PDF document text
    • https://paeonia.ch/userfiles/files/83673885748.pdfIn PDF document text
    • https://clubberia.com/js/ckfinder/userfiles/files/rubowalarine.pdfIn PDF document text
    • https://phnews.ro/files/file/99197867852.pdfIn PDF document text
    • http://msmzizkov.cz/data/dokumenty/xaxatowusozalirogak.pdfIn PDF document text
    • https://viboot.com/ckfinder/userfiles/files/13027694364.pdfIn PDF document text
    • http://clinton.abwingsmd.com/uploads/files/30199806252.pdfIn PDF document text
    • http://studiotecnicostradi.eu/userfiles/files/waxelume.pdfIn PDF document text
    • https://arendic.cl/files/dimonitofisosiguvepufemu.pdfIn PDF document text
    • http://kibbkw.com/uploads/file/xonilefitokuzalivix.pdfIn PDF document text
    • https://solelane.com/ckfinder/userfiles/files/lozariza.pdfIn PDF document text
    • http://artpolinakuzina.ru/pict/file/naburetalarozuf.pdfIn PDF document text
    • http://merklink.nl/site/data/ws/files/86699405379.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1616a0f2ea3f27---vusukaxorigibatejavasev.pdfIn PDF document text
    • https://auditorescr.com/ckfinder/userfiles/files/gimabawagizelagom.pdfIn PDF document text
    • http://gmtshipping.com/attachment/file/xukirelufatujupoki.pdfIn PDF document text
    • http://merwepizza.com/upload/file/nolegewun.pdfIn PDF document text
    • http://www.520amis.com/upload/files/weborajosekim.pdfIn PDF document text
    • https://corpusbg.com/files/fck/file/didatapoweside.pdfIn PDF document text
    • https://vjlabor.pitscovn.com/uploads/Upload/files/52258674840.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/BcFPVxLj4jw/uplcv?utm_term=dheere+dheere+se+new+male+version+mp3+downloadPDF link annotation
    • http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/pubabomafemotixaku.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC03C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d84e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD84E 19480 bytes
SHA-256: 5b1d96ddd1b76424a35d203505ce678efd0fa1338221b859d25d7b4a2c700000
font_02_sfnt_off00010a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4A 10884 bytes
SHA-256: e2b0b1eaf717542a09cf6e671d1eacb97d9f48af39071ce0a4193a07e18d5d45

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