Malicious PDF — malware analysis report

Static analysis result for SHA-256 478e2b179d11a654…

MALICIOUS

PDF

78.6 KB Created: 2021-10-12 07:26:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: c414257994d0e8822071fa10648e21fe SHA-1: 9c8efb42b97ff5a400704ab4d440c51094323302 SHA-256: 478e2b179d11a6540c74dd350abfbc31967fec28b6f990564f93b31f7d2cdb98
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://ketchas.ru/uplcv?utm_term=is+frying+an+egg+a+chemical+reaction PDF link annotation
    • http://brkvinc.com/userfiles/file/fevojajixibotox.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/afgpocur5tqfhp65d53hss5o7l/xotiguwekarejubo.pdfIn PDF document text
    • https://www.paseppe.gr/ckfinder/userfiles/files/lifevogexugigimabumuru.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/04d625a86b05b2bbfaf404b776b1e6b2/72154833111.pdfIn PDF document text
    • http://wsm.hk/images/files/72131108066.pdfIn PDF document text
    • http://livelyway.com/ckfinder/userfiles/files/pezavabiza.pdfIn PDF document text
    • http://duepassidalcentro.it/userfiles/files/63287621113.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e948483c73---jekomuronoruvogefavi.pdfIn PDF document text
    • https://preciseenergygroup.com/media/xaxamafafekepanuvo.pdfIn PDF document text
    • http://bolt.fo/public_html/userfiles/files/80251000319.pdfIn PDF document text
    • https://luckysurface.itweald.com/uploads/files/6159c491a10ef.pdfIn PDF document text
    • https://htcpost.vn/vietpost.vn/img_content/file/xobewemanujagow.pdfIn PDF document text
    • http://olddieselparts.com/ckfinder/userfiles/files/jowotufukagegodedugelelar.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614434136a88a---vejuwugopa.pdfIn PDF document text
    • https://amursvoidom.ru/media/files/84467234824.pdfIn PDF document text
    • http://phuquytravel.com/nguyenvanlinh/files/16032797843.pdfIn PDF document text
    • http://dorp.pl/userfiles/files/diberajito.pdfIn PDF document text
    • http://brushes.tfe-design.dk/userfiles/file/nefopu.pdfIn PDF document text
    • https://marwaautorepair.com/nbloom/fckuploads/file/rokofeludesaluli.pdfIn PDF document text
    • https://maurinet.com/userfiles/file/jewiriko.pdfIn PDF document text
    • http://paraglider24.de/pics/fotos/1/file/65367753909.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/efdk9ea3hsvjogleu1kijmsj6l/6599914709.pdfIn PDF document text
    • https://mayxaydungthienlong.com/uploads/files/files/41412944201.pdfIn PDF document text
    • http://tindangnhadat.vn/upload/files/90464387777.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_off0000cf94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF94 17228 bytes
SHA-256: 23719e3bcd28fada7ed89ca8c8e81701efa066bc8d6c0e7f4a258e8ac0517819
font_01_sfnt_off0000fb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB56 10848 bytes
SHA-256: b9d3b22177e25b8ee536d1e51a3e4e76223951eff30455ae32b77ff7e6a85d21
font_02_sfnt_off0001143d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1143D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1