Malicious PDF — malware analysis report

Static analysis result for SHA-256 4508704b064fb925…

MALICIOUS

PDF

81.5 KB Created: 2022-04-19 15:43:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-24
MD5: 428a49e42f60467dd27c375da93ea050 SHA-1: c0675740dc96ab714a06dfeebb9f8889588e37af SHA-256: 4508704b064fb925f8479c1172f61298d3ef228ad2f98f480d3f4f0dd0283006
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1625837c28bbac---94363009000.pdf In PDF document text
    • https://mebavamuwonulaz.weebly.com/uploads/1/3/5/3/135324046/lekijerutep.pdfIn PDF document text
    • https://rewazifepa.weebly.com/uploads/1/3/4/6/134664269/4810231.pdfIn PDF document text
    • https://bowetupivivuz.weebly.com/uploads/1/3/1/4/131437724/1499400.pdfIn PDF document text
    • https://xenofoko.weebly.com/uploads/1/3/4/7/134735933/3830779.pdfIn PDF document text
    • https://rizekojak.weebly.com/uploads/1/4/1/4/141468140/3e3fdb58e2c33.pdfIn PDF document text
    • https://mogatuzutixu.weebly.com/uploads/1/3/4/6/134684840/lezibudimevajalovuzu.pdfIn PDF document text
    • https://simomoluxaruto.weebly.com/uploads/1/3/4/8/134859410/d6f3c6eb892b2a.pdfIn PDF document text
    • https://rafunegax.weebly.com/uploads/1/3/4/3/134350232/tuzafoj.pdfIn PDF document text
    • https://zasosefudasu.weebly.com/uploads/1/3/1/8/131856937/xivewekelirot_rulejut.pdfIn PDF document text
    • https://jamobosis.weebly.com/uploads/1/3/4/6/134684796/senaxom.pdfIn PDF document text
    • https://zumukematil.weebly.com/uploads/1/3/4/7/134716366/735fb598bffa.pdfIn PDF document text
    • https://www.cis2020.scrs.in/kcfinder/upload/files/lejesefadonobuvemukiboru.pdfIn PDF document text
    • https://bcinterior.gocascadia.com/images/cms/file/40222005696.pdfIn PDF document text
    • https://fizokufewof.weebly.com/uploads/1/3/4/0/134096090/xupowijo.pdfIn PDF document text
    • https://fuketuxe.weebly.com/uploads/1/3/4/4/134495293/kexubojajelafum.pdfIn PDF document text
    • https://gitapelo.weebly.com/uploads/1/3/2/6/132682700/205ac24a7fe.pdfIn PDF document text
    • https://luxefelukij.weebly.com/uploads/1/3/0/7/130775337/xegewilirijazeju.pdfIn PDF document text
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/5432176876.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/kawamivepefekimepaxujusa.pdfIn PDF document text
    • https://demo-universal.order-pro.com/ckfinder/userfiles/files/zonobusenuwaboguzufa.pdfIn PDF document text
    • https://colod.co.za/YmrXLWy8?keyword=protocolo%20aspiracion%20de%20secreciones%20orofaringeasPDF link annotation
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1623d91643cb89---kodasi.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_off0000d926.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d926.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD926 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13D 10796 bytes
SHA-256: 20ba147e7f8add8b2baf7d7110a72a10ff3b7a595222cd238a22451e5a7607a4
font_02_sfnt_off00010a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A01 17312 bytes
SHA-256: ff2ae063d3b1331660414927d6c2c47ee82268ba251c39200ba5381e9f80e11f