Malicious PDF — malware analysis report

Static analysis result for SHA-256 634a9c813ca1319f…

MALICIOUS

PDF

72.2 KB Created: 2022-04-07 07:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: b73397057295993da382b816690bc4ac SHA-1: 69e23485d3490ff3731b0c11d6d816569b20315d SHA-256: 634a9c813ca1319f28241665a55d220dbd1e0f14fb5d233313a81969c6b23b85
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=largest%20scale%20diecast%20cars PDF link annotation
    • http://cinstech-inspect-survey.com/fckeditor_userfiles/file/78743112806.pdfIn PDF document text
    • http://perfekt-dom.pl/designhome/admin/userfiles/file/17350875988.pdfIn PDF document text
    • https://nukesusidogix.weebly.com/uploads/1/3/4/6/134608931/8396164.pdfIn PDF document text
    • https://morizuni.weebly.com/uploads/1/3/4/6/134606759/bowidimuvisad.pdfIn PDF document text
    • https://xufujakuzizam.weebly.com/uploads/1/3/5/3/135315974/3109153.pdfIn PDF document text
    • https://funke.be/data/file/luzubo.pdfIn PDF document text
    • https://rudorigafeba.weebly.com/uploads/1/3/4/8/134899211/wavoluxiz_texisev_towigixe_nadivorotaki.pdfIn PDF document text
    • http://gesgo.de/userfiles/file/36379873740.pdfIn PDF document text
    • https://tamamola.weebly.com/uploads/1/3/4/6/134690119/ddf169ee6d8.pdfIn PDF document text
    • https://muxilakenakujud.weebly.com/uploads/1/3/4/0/134012833/b11601.pdfIn PDF document text
    • http://vidol.eu/userfiles/file/39798970700.pdfIn PDF document text
    • https://vedoxugubizo.weebly.com/uploads/1/3/4/3/134348858/1610274.pdfIn PDF document text
    • https://www.pkkmaluku.org/berkas/plugin/ckeditor/kcfinder/upload/files/fanomudilen.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/japgddenv9kvm6gphqrgfir37g/86397462568.pdfIn PDF document text
    • https://nekewagan.weebly.com/uploads/1/3/4/8/134881830/5f576bffc41.pdfIn PDF document text
    • http://hhoasis.org/app/webroot/img/fck/file/xuxobos.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/doxejefafumifozekuxi.pdfIn PDF document text
    • http://varnamonarradio.se/admin/kcfinder/upload/files/26779618178.pdfIn PDF document text
    • https://muzuxagofonokow.weebly.com/uploads/1/3/1/4/131406885/2970552.pdfIn PDF document text
    • http://purestonediamond.com/upload/files/62837461640.pdfIn PDF document text
    • https://rizowowomupi.weebly.com/uploads/1/3/4/3/134344214/bilatow.pdfIn PDF document text
    • https://dichvuhappyhouse.com/upload/files/85239856276.pdfIn PDF document text
    • https://foniliwis.weebly.com/uploads/1/3/2/6/132695455/9a49e.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_off0000b805.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b805.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB805 10276 bytes
SHA-256: 659d5e53baa8671fac401034e515d6ff8c992330d1651be42b5c5e2670e474cb
font_01_sfnt_off0000cf03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF03 16916 bytes
SHA-256: d93deee6bbc48da44119e37e69874950d723ad523264f386ee30d630f90c72a1
font_02_sfnt_off0000fb48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB48 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1