Malicious PDF — malware analysis report

Static analysis result for SHA-256 445d5c4a6e5b8bbe…

MALICIOUS

PDF

600.4 KB Created: 2021-12-31 08:03:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-10
MD5: 4e3bee95874027a4ca966df37089deaf SHA-1: d2b73899585299f14dacfe03270c520822fde4fd SHA-256: 445d5c4a6e5b8bbea724706e94db87b8bc104b8c0e01d207ce7f79398c8144a3
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4253

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://www.alliance-bio.com/user_data/editor/ckfinder/core/connector/php/upload/files/wimifukepufererivusek.pdf In PDF document text
    • https://resttour.com/images/userfiles/files/galituv.pdfIn PDF document text
    • http://mcutech.net/upload/2021/11/file/16363012851878574979.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/61e5d2bfc2c7d5b472269aca84d606de/59812827844.pdfIn PDF document text
    • https://samsungklima.net/upload/ckfinder/files/56526460093.pdfIn PDF document text
    • https://thefashion.asia/admin/kcfinder/upload/files/sirobitawigiwubuvibe.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ab833606358---durorul.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/4f1f17894f8b47890a1266300b91a974/57945190635.pdfIn PDF document text
    • http://an-professional.ru/img/files/file/wogimaruxewumipubosax.pdfIn PDF document text
    • http://technology-mp.it/userfiles/files/getegebeseviwadil.pdfIn PDF document text
    • http://parateam.cz/file/pakudirotasu.pdfIn PDF document text
    • http://tiga.co.th/ckfinder/userfiles/files/tojebulafejepoxelo.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1619564d6cc599---69691230455.pdfIn PDF document text
    • https://pristineleather.com/userfiles/file/penabuj.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136c83a15eb2---3721195350.pdfIn PDF document text
    • https://petek.biz/resimler/files/75237497601.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/9jor7oda1tvcoue768m1bpin1l/gifazamulunadebebife.pdfIn PDF document text
    • https://aharonoff.easystockhosting.com/sites/default/files/fckimages/file/futasatobinexoso.pdfIn PDF document text
    • http://urbariatprasice.sk/upload/file/mekudanomekekebegulud.pdfIn PDF document text
    • http://waterlootour.com/FileData/ckfinder/files/20211206_E28BEEC3DE165D3C.pdfIn PDF document text
    • https://medicabg.com/uploads/wysiwyg/files/sonegetidixazutu.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/sipanirajabezubopikomab.pdfIn PDF document text
    • https://k31szmq42-nu28.com/contents/files/jawebupimutovunud.pdfIn PDF document text
    • http://haitrungkim.vn/uploads/userfiles/file/50860084129.pdfIn PDF document text
    • https://ochronaskory.pl/pliki_user/File/93773262925.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/6Zflnl449io/uplcv?utm_term=commando+3++free+full+versionPDF 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_off0008f178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F178 10784 bytes
SHA-256: ea6f0c5ced1d5d7124d58cebfcf36d2874eedd4a088cd15a4b83740533b45aae
font_01_sfnt_off00090a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A51 18688 bytes
SHA-256: 73991da80d6347e2683d29b2ac64130f05f8effa24967847932e896eed1d11fd
font_02_sfnt_off00093b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B3D 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336