Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6369efd73010a2…

MALICIOUS

PDF

71.2 KB Created: 2021-09-18 15:21:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: f4227f25c0e8c6de008c4a94ef2101d6 SHA-1: 96dc60ab9a6c9c284655839593e0bb8e74ec1cc5 SHA-256: 2b6369efd73010a2eb6a83c2e3c8c8b3cfc18ff5d298c009c2ffe15fbb36f0c3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://chcial.ru/uplcv?utm_term=download+video+from+any+app+android PDF link annotation
    • http://skkl.cn/filespath/files/20210914014907.pdfIn PDF document text
    • http://skupka23.ru/upload/m/33220521682.pdfIn PDF document text
    • http://aquaclub.hu/userfiles/file/miroxodakapiniki.pdfIn PDF document text
    • http://nanobubblevietnam.com/uploads/userfiles/file/1075818544.pdfIn PDF document text
    • http://sz-nuoyi.com/Upload/file/2021090408534356149.pdfIn PDF document text
    • https://ta-taiwan.com/app/webroot/userfiles/files/tebimovi.pdfIn PDF document text
    • https://auto-rujo.com/images-editor/file/32036112549.pdfIn PDF document text
    • https://charlesstreetvideo.com/userfiles/file/bumuzakirovoropodaganax.pdfIn PDF document text
    • http://cgpharma.in/cote_dor_import/admin/ckfinder/userfiles/files/filufowapox.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/bifaterupukodum.pdfIn PDF document text
    • http://dsagco.com/Upload/file/94485396798.pdfIn PDF document text
    • http://squarcialupirelaxinchianti.com/writable/public/userfiles/file/16073528044.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///vuzegekodezexirin.pdfIn PDF document text
    • http://huyminhplastic.com/upload/files/24867203148.pdfIn PDF document text
    • http://a2kat.ru/userfiles/file/52808069354.pdfIn PDF document text
    • https://robodom.si/files_vsebine/26576744080.pdfIn PDF document text
    • https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/74289482545.pdfIn PDF document text
    • https://terlickodds.cz/www/www/fckphotos/file/13458137150.pdfIn PDF document text
    • https://safewatersolutions.in/ckfinder/userfiles/files/12166636645.pdfIn PDF document text
    • http://vdavloeren.be/userfiles/files/61320649635.pdfIn PDF document text
    • http://ecoaga.com/documentos/file/80776764173.pdfIn PDF document text
    • https://rugsdirect4u.com/uploadedfiles/file/62398807106.pdfIn PDF document text
    • https://creteservices.com/FCKeditor/userimages/file/99886319700.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_off0000b4a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4A1 10660 bytes
SHA-256: 66ff4a2709f652face7de8ccac98a80d43db85bbccfa2b9308a5abfafec24908
font_01_sfnt_off0000cd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51B 16684 bytes
SHA-256: f36432ed60fca1ee0cb5e5bc79adedbcbbc6a295b1493c83646d6c1b8513b379

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