Malicious PDF — malware analysis report

Static analysis result for SHA-256 425c62ab6d150a02…

MALICIOUS

PDF

70.9 KB Created: 2021-09-28 11:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 34aabf17546aa8b6a3d9ec8357f5829e SHA-1: d8ec4b9f96f0217c54ba12244088dc21877bdb7c SHA-256: 425c62ab6d150a025c2eca5c1dd3a5476fab5503e60e29edaa86f956617f749d
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://medvor.ru/uplcv?utm_term=orson+scott+card+pdf PDF link annotation
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16138fc32e290c---90094351513.pdfIn PDF document text
    • https://rsun.pro/admin/ckfinder/userfiles/files/8555096630.pdfIn PDF document text
    • https://mudraconsultancy.com/uploads/files/lolojorebep.pdfIn PDF document text
    • https://daiichitravel.com/uploads/news_file/77152262759.pdfIn PDF document text
    • https://sunnyvale.com/wysiwygfiles/file/79914012857.pdfIn PDF document text
    • http://fosterfreezesantarosa.com/uploads/files/wukawizukusugon.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/631a78c98f7d54168cb804fc8954ea6b/22440154441.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/ddeb907a9767cd093dcd98aee3e0c876/rulatijakezafava.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613f1a7e809ee---99530930822.pdfIn PDF document text
    • http://faradtvandor.hu/picture/userfiles/file/kofezusul.pdfIn PDF document text
    • https://topclassgardening.nl/images/file/34559980979.pdfIn PDF document text
    • http://www.sec-ollivier-associes.fr/www/upload/file/73988374013.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/161301f1bee573---wogamixepinolarefilujoxo.pdfIn PDF document text
    • http://hasomedia.com/userfiles/file/tuwemivepejebasu.pdfIn PDF document text
    • http://prime-standard.com/piceditor/file/diroduboliwapusa.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/25385350861.pdfIn PDF document text
    • http://aloeverajuice.cz/files/file/25321732145.pdfIn PDF document text
    • http://hotelpenza58.ru/ckfinder/userfiles/files/lukeseg.pdfIn PDF document text
    • http://capriololaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gagebobekodos.pdfIn PDF document text
    • https://valve-toho.com/userfiles/file/videragusuvozifefirin.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/bc64839d3ee0312af7f556991104b9a7/worujadixiv.pdfIn PDF document text
    • https://spheresignal.com/app/webroot/userfiles/files/wemusigamujanitegiv.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/d99e79cc0da3eeec0af5280301e44422/71314320928.pdfIn PDF document text
    • http://panda-es.tokyo/yamituki-n/uploads/files/pirazafe.pdfIn PDF document text
    • https://svltv.in/userfiles/files/pivavoxafofu.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_off0000b51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB51D 10368 bytes
SHA-256: 5be78a2e5582107b369f238aeb9e161944d7d3b9f45a26ee39439688e9889892
font_01_sfnt_off0000ccb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB2 16144 bytes
SHA-256: f0971a867b3cb0acb29a17bbf3e8f6ee8df773f14e56f188d29824ef86ed1dd4
font_02_sfnt_off0000f5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1