Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d63845dc64cda1…

MALICIOUS

PDF

73.0 KB Created: 2021-10-07 19:04:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-06
MD5: f5e80fa84964ce95c4a9a8eb8c90ac91 SHA-1: a1f44c799302895b8983e7973227140d600a295d SHA-256: b5d63845dc64cda1b9cecaad885dcf2825db41ce32d740911e1b39c1d26c61a2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ketchas.ru/uplcv?utm_term=merle+tri+color+pitbull+for+sale In PDF document text
    • http://zatuchlina.cz/upload/file/fivalatanolix.pdfIn PDF document text
    • http://mrtowing.ca/Lawyers/userfiles/file/wowisalaroligidenim.pdfIn PDF document text
    • http://lev-steklo.ru/userfiles/file/74052587646.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/64699539270.pdfIn PDF document text
    • http://15449010.com/FileData/ckfinder/files/20210904_5141B38FC9DFF5AB.pdfIn PDF document text
    • http://geoman.cz/data/file/jezepofutifunetezela.pdfIn PDF document text
    • https://derechosenred.org/aym_image/files/votovatuxiguwofosavop.pdfIn PDF document text
    • http://e-restauracion.com/app/webroot/files/uploads/files/sujad.pdfIn PDF document text
    • https://tspinstruments.com/cache/fck_files/file/lasekudopalesafubo.pdfIn PDF document text
    • http://cateringkieuan.com/uploads/userfiles/file/52967751497.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614901dacb430---dusifafuguruwefemevilo.pdfIn PDF document text
    • http://kolorubursztynu.kolorubursztynu.pl/web/uploads/files/68997037118.pdfIn PDF document text
    • http://ladna.pl/user_images/file/juxela.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615b2767b7aa6---22852710666.pdfIn PDF document text
    • http://royalleasingny.com/admin/images/file/xezebategonosuferideva.pdfIn PDF document text
    • http://tao-oita.com/admin/upload_filesfile/4143108198.pdfIn PDF document text
    • https://quanticabtl.com/cms_2018_quantica/sgi_userfiles/userfiles/files/zuxoxijatukanuku.pdfIn PDF document text
    • http://ageofwonders.buka.ru/sadm_files/dagenigof.pdfIn PDF document text
    • http://solarhomepage.ch/fckeditor/editor/images/file/tesusutopazimuragove.pdfIn PDF document text
    • http://sakaryakasaplarodasi.org/userfiles/file/zokozizumow.pdfIn PDF document text
    • http://oralrem.kz/ckfinder/userfiles/files/1032349913.pdfIn PDF document text
    • https://minipowerpack.net/upload/files/99416945573.pdfIn PDF document text
    • https://dolnoslaskialarmsmogowy.pl/imgturysta/files/93813583739.pdfIn PDF document text
    • http://markone-tools.com/upload/files/48807215301.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_off0000b9ad.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b9ad.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9AD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d1c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C4 10604 bytes
SHA-256: 98a9a21950838875e5ef0b20a7412bab760e1643e79ab07fbb89736c6190f7ff
font_02_sfnt_off0000e9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EF 17176 bytes
SHA-256: cf7fafc1dbcc0cf1088e8c9891d46879ccf7cf952d7faa7f2786a649380bb48e