Malicious PDF — malware analysis report

Static analysis result for SHA-256 478c36f1bf0428a6…

MALICIOUS

PDF

98.8 KB Created: 2021-08-29 15:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 476f9be9f807038078511926f60a5b5b SHA-1: 1e80ae281658ecd8e4ba2f77e06addf18bdeb506 SHA-256: 478c36f1bf0428a6917c4d4764a3c2f55cbcb974a65a807403a127cedab4df4d
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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 http://pulsarvn.com/media/ftp/file/tojijabuzoz.pdf In PDF document text
    • https://zlataraburmevuckovic.com//files/fegelilupejijifakig.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/1ca7496f6af0e65f125313fa6f4ed72f/gulutosobigomi.pdfIn PDF document text
    • http://wahibluedevils76.com/clients/5/55/55d7338a7abcce318bc847d7f34994f5/File/konupuwovuwasepekamenom.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608018fcc4966---6700957159.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/6lfgpg7aug47dp56feaj9ft67f/judafew.pdfIn PDF document text
    • http://boldino-hotel.com/ckfinder/userfiles/files/vagemomivezizikeves.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/vasakuvotowafapowurer.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161182ded883f9---71564247527.pdfIn PDF document text
    • http://amajyuku.com/files/files/85533406904.pdfIn PDF document text
    • https://bilalyapidekorasyon.com/userfiles/file/rabomeridadojefatima.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/727815854b87fc83e71a040648520282/90854497891.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608217f000cbb---zunusagedoxozalaza.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c75cb240523---sepavosimoteboketegemiz.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/6e482ebgl5kcd5gndiahvlbtv3/vubikazodose.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/59557973406.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a61e8e3d857---tuturatuxafova.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/fojulujebonuzevojemewuf.pdfIn PDF document text
    • https://castilloexterior.net/ckfinder/userfiles/files/kaziro.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/de1bae4ee495ce12b0b060ae07d764af/68997945434.pdfIn PDF document text
    • http://webinaris.net/ckfinder/userfiles/publics/files/82192356568.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=scilab+low+pass+filter+examplePDF 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_off000116a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116A0 10940 bytes
SHA-256: 5a21747b78873e7ee1e94a22fedd9a43ab6f1cb6bfc045fa10ccec00527d09b7
font_01_sfnt_off00012fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FDE 19828 bytes
SHA-256: 2a23f2fd59f9ea3dcf7d94e2d3af60aa2913d9825dbe9ad599fbdeeed09e6067
font_02_sfnt_off0001647a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1647A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1