Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f5a6253a58bdf8…

MALICIOUS

PDF

81.0 KB Created: 2022-04-14 09:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: 21cb96794713047a793051a3eddd76be SHA-1: 48ef98dc3fd0b123426f416be636957baf58e312 SHA-256: a4f5a6253a58bdf85c50ad1965e15b6336abf8e304d21bf74f4f83fd8297c47c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://norin.co.za/YmrXLWy8?keyword=how%20to%20summon%20spirits%20in%20super%20smash%20bros%20ultimate PDF link annotation
    • https://latabiwot.weebly.com/uploads/1/3/4/6/134612911/25473288c0f637a.pdfIn PDF document text
    • http://www.egavilanes.com/ckfinder/userfiles/files/10680562939.pdfIn PDF document text
    • http://kahsport.cz/userfiles/file/7277493942.pdfIn PDF document text
    • http://feg.vn/uploads/files/26527950543.pdfIn PDF document text
    • http://www.cidadania23pr.org.br/ckeditor/kcfinder/upload/files/53206372360.pdfIn PDF document text
    • https://turbooto.vn/upload/files/93201775414.pdfIn PDF document text
    • https://korankertas.com/contents/files/90652534798.pdfIn PDF document text
    • https://jamisonfurnace.ca/userfiles/files/rifotet.pdfIn PDF document text
    • https://www.vyrobadps.eu/admin/kcfinder/upload/files/56553501979.pdfIn PDF document text
    • http://ceu-jgh.org/kcfinder/upload/files/69109376852.pdfIn PDF document text
    • https://maquinandoysubastando.com/dleyes/admin/fotos/file/26156412812.pdfIn PDF document text
    • https://vabisoxapulaji.weebly.com/uploads/1/3/4/4/134444495/7ce1445834.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/pudivali.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/rivopinowumaveropubo.pdfIn PDF document text
    • https://fullhousetourism.com/UploadFiles/file/20220324170146138.pdfIn PDF document text
    • https://inflexi.com/kcfinder/upload/files/68652170653.pdfIn PDF document text
    • http://reanda.com/jingkelun/userfiles/files/20220202210351.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/fitavivoxutijigor.pdfIn PDF document text
    • http://chiangmai-clean.com/user_img/files/lawisi.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/95215480085.pdfIn PDF document text
    • https://manhremhoangvan.vn/wp-content/uploads/files/11982557647.pdfIn PDF document text
    • http://ladyqueen.it/userfiles/files/meseresozozere.pdfIn PDF document text
    • http://doicoffee.co.jp/js/kcfinder/upload/files/84033951527.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 extracted file (font_00_sfnt_off0000d974.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d974.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD974 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF186 16756 bytes
SHA-256: b3bc1a9c32114f78449156e978ab31d7fcada51522ebf3d2dbc83b5f395514ba
font_02_sfnt_off00011d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D33 10836 bytes
SHA-256: 9d46c7b20fb3aa3601fd14a46886ea7f017a53fcf9bc888add3c67442070a36c

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