Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e37bcafa862fd80…

MALICIOUS

PDF

98.6 KB Created: 2021-10-07 16:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 06c30500a8e4c65ed3145cc462addd11 SHA-1: 67f8e213ee47be1086e4d266f60a959cec9890ae SHA-256: 4e37bcafa862fd803b82b8a75734aade365a6371148dd783234d694277fd8f0a
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • 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.
  • 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 https://pixomot.ru/uplcv?utm_term=spider+silk+cuts+weight+of+bridges+reading+answer PDF link annotation
    • http://olgapolyakova.com/files/files/vutax.pdfIn PDF document text
    • http://distant-property.ru/fck_editor_files/files/58646670747.pdfIn PDF document text
    • https://ecohort.info/userfiles/files/45109151347.pdfIn PDF document text
    • https://reparationmobile.net/userfiles/file/44680795000.pdfIn PDF document text
    • http://highlevel.pl/userfiles/file/tobirolotoloxogojadiwig.pdfIn PDF document text
    • http://dominopark.pl/public/upload/ckfinder/userfiles/files/44864939532.pdfIn PDF document text
    • https://hyundainhapkhau.vn/upload/files/kegefi.pdfIn PDF document text
    • https://starfoil-mail.nl/uploads/wysiwyg/15203168655.pdfIn PDF document text
    • https://adci.vn/data/upload/file/bawotalinuse.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/ffqrqudt9dglf33pl63dh4ia03/mizedowar.pdfIn PDF document text
    • https://soportedevida.mx/ckfinder/userfiles/files/40749241088.pdfIn PDF document text
    • http://denetimmusavirlik.com/userfiles/file/pejomi.pdfIn PDF document text
    • http://doctour.hu/uploads/ckfinder/userfiles/files/81226898016.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/ribegajobukerulabar.pdfIn PDF document text
    • http://www.rupankar.com/fckimages/file/48318967633.pdfIn PDF document text
    • http://rubivina.com/Images_upload/files/77197684380.pdfIn PDF document text
    • http://seamacros.com/upload/file/91699645719.pdfIn PDF document text
    • http://tipkeo.com/js/ckfinder/userfiles/files/50813980884.pdfIn PDF document text
    • http://compagniaviaggi.gattinonimondodivacanze.it/themes/userfiles/files/18305391358.pdfIn PDF document text
    • http://hongshengfish.com/uploadfiles/20210909/210909061723034227a6w7bc7sykdb.pdfIn PDF document text
    • https://adetexfoamgroup.centralcms.cloud/galeria/files/pitibowuduzekapu.pdfIn PDF document text
    • https://dlt-nkp.com/fileupload/file/71486864936.pdfIn PDF document text
    • http://fiorenzuolatrack.it/userfiles/files/xifaxedadudetonujimexinuz.pdfIn PDF document text
    • https://ka-base.no/images_students/files/64600485293.pdfIn PDF document text
    • https://22importexport.com/eimages/file/25672840597.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_off00010874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10874 24608 bytes
SHA-256: 41bcdb6ff5810dd28240046bb343457c3a838994673c7c6ffa28f3cd8ae2fda8
font_01_sfnt_off0001475e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1475E 11392 bytes
SHA-256: 37a5d17c711672e7415a0150c988c0943a2d542a1ee2a3eaf3c304cc6dd24fee
font_02_sfnt_off000161cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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