Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af8cc775815d52a…

MALICIOUS

PDF

76.4 KB Created: 2022-04-17 14:11:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: cf2f93a2f19c7b0fc17810abc688675e SHA-1: 300b1cec6bb481747e2ef2aed4fd38681d2802fd SHA-256: 4af8cc775815d52aacac3e8ceb6259afb6f79fbf6944f6d32c4e878e2c38eda8
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=where%20can%20i%20get%20mini%20dv%20tapes PDF link annotation
    • https://monceau.kopro.fr/userfiles/file/medagufuzupiv.pdfIn PDF document text
    • https://tukevoxawirunu.weebly.com/uploads/1/3/4/5/134584752/lujevixo_zemiv.pdfIn PDF document text
    • http://mdfgiare.com/upload/files/tubazovopokid.pdfIn PDF document text
    • http://greenbiotech.vn/uploads/userfiles/file/zamatugufomexabagufovif.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16208c9e30ddfa---23209621179.pdfIn PDF document text
    • https://lidimegofomizut.weebly.com/uploads/1/3/1/3/131380930/6583218126569.pdfIn PDF document text
    • https://fkip.unsam.ac.id/kcfinder/upload/files/62159386354.pdfIn PDF document text
    • http://synerfreight.com/syner_upload/images/files/11801680206.pdfIn PDF document text
    • https://tawisowa.weebly.com/uploads/1/3/5/3/135315305/besegakeremedoj-tozos.pdfIn PDF document text
    • https://tkaniny-svitap.cz/kcfinder/upload/files/lepufuset.pdfIn PDF document text
    • https://satuldelut.ro/ckfinder/userfiles/files/sexazezimemujaxinorazuju.pdfIn PDF document text
    • http://kickstartfintech.com/ckeditor/kcfinder/upload/files/24404822972.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/162408e1726259---sobazomo.pdfIn PDF document text
    • https://alariel.be/userfiles/file/26597895637.pdfIn PDF document text
    • https://juwememuju.weebly.com/uploads/1/3/4/5/134523402/rufuw.pdfIn PDF document text
    • https://xuxufagitagagi.weebly.com/uploads/1/3/0/7/130740521/7218562.pdfIn PDF document text
    • https://koxipaburejoxow.weebly.com/uploads/1/3/2/6/132681725/79152.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/cbfb4e1128d1f495a8efd90f40f2bc2d/gigibuduzupenunexovafo.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/sodojamekajidilonabidip.pdfIn PDF document text
    • http://tt-ural.su/admin/ckfinder/userfiles/files/kexusutegerabule.pdfIn PDF document text
    • http://saluteebenesseresas.it/userfiles/files/73957578660.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_off0000c4ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4EC 17176 bytes
SHA-256: 39174e9bf5b33fde7bdb1d88dcce37e7e9ef2bba7824eab454ad740f8e17f2ee
font_01_sfnt_off0000f1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B6 10852 bytes
SHA-256: b33a58b97e6196cf107b32d31a9851f368be78c6ea0fa374d9e68b56dea00d82
font_02_sfnt_off00010a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1