Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd0fd83acfa61a9…

MALICIOUS

PDF

97.5 KB Created: 2021-09-14 00:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: ac34d815203ae738e505e7b231cf91f3 SHA-1: 5c805c972b60adcf5b8606e627381ade01c29fd0 SHA-256: 3dd0fd83acfa61a9b1d47213e1c96b7aeeae2bdb47e4c17b7f6a7405dd417496
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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
  • 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 http://latiendasegura.com/contable_prueba/userfiles/file/guvojexanuvexej.pdf In PDF document text
    • http://kodemari.info/data/files/56485235396.pdfIn PDF document text
    • https://chinese-wall.tw/upload/files/zujorazinugunazivodimibug.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/161390fd93bb94---6054653989.pdfIn PDF document text
    • http://harchovyk.com/userfiles/file/70830226759.pdfIn PDF document text
    • http://greenmodels.ru/uploads/files/mofusavimuwofuni.pdfIn PDF document text
    • http://www.gamylai.vn/uploads/files/vunejilatanobesepivefim.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16130227c8dbb4---durufem.pdfIn PDF document text
    • https://www.sesc-am.com.br/Selecao/ckfinder/files/nafezusonomulaperidajuzud.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/eee659e4f6029ab02dcb289a66809d07/zuxifopude.pdfIn PDF document text
    • http://fsgpj.com/upfolder/e/files/20210903144834.pdfIn PDF document text
    • http://vertracapital.com/uploads/files/vinutaxopuvorawijesatixos.pdfIn PDF document text
    • http://music-summer-courses.eu/upload/files/jiduwepapakewiratax.pdfIn PDF document text
    • http://busangh.com/attfile/fckimg/file///2021090945518_120664922.pdfIn PDF document text
    • https://seas2010.cienciaevida.pt/site/upload/file/47879014147.pdfIn PDF document text
    • http://whitedwarf.ru/public/images/ckfinder/files/83584133076.pdfIn PDF document text
    • http://volkshilfe-vlbg.at/images/content/files/vatogidola.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16137232ce1095---giropifutol.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/wadofifafuvixejagu.pdfIn PDF document text
    • https://mgogs.com/mgfiles/file/13026494228.pdfIn PDF document text
    • http://debandhelder.nl/ckfinder/userfiles/files/lizazapodonalapizisa.pdfIn PDF document text
    • http://noavarservice.com/ckfinder/userfiles/files/gipojopuvekajuwubelizol.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=icd+10+cm+pdf+2020PDF link annotation
    • 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_off00011afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AFD 10004 bytes
SHA-256: 1334111ce0f1315558e079137448d2584282d94ebab194a4fe3218a3ffb1082a
font_01_sfnt_off00013139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13139 18432 bytes
SHA-256: 43e4acf7678704a93eb119b86bb7da1a3f96c13cfa9e9faf0b1c85ab46970a27
font_02_sfnt_off000160e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160E4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1