Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d807396444b8b39…

MALICIOUS

PDF

306.6 KB Created: 2021-12-30 13:18:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 95bd146a99b6b35a0fe87a5de9969426 SHA-1: 24205bfa329326f6de0b0b8916ca7d2c3344a3d7 SHA-256: 5d807396444b8b398692c8e7a9091f99a6091d909daba37fd7fbdb975fa8acc7
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7548

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://krisoc.ru/uplcv?utm_term=better+half+of+me+acoustic PDF link annotation
    • http://studiorinaldibedin.eu/userfiles/files/dujuvapevazovarusuzetax.pdfIn PDF document text
    • https://europacreativaeuskadi.eu/files/galeria/files/34046093300.pdfIn PDF document text
    • https://ural-aiti.ru/admin/ckfinder/userfiles/files/lidabeposajavota.pdfIn PDF document text
    • http://www.sandipmallick.com/fckimages/file/47008717535.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/727la9af319n7ml0ut6a8u0384/gopunurumimukovenu.pdfIn PDF document text
    • https://villagrancanaria.bookipro.com/js/libs/ckeditor/plugins/kcfinder/upload/files/61974551290.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/65757455540.pdfIn PDF document text
    • https://www.journalstudiesanthropology.ro/adm/jsq/kcfinder/upload/files/97328180229.pdfIn PDF document text
    • http://serextion2006.com/js/upload/files/navutivibinajunosewuket.pdfIn PDF document text
    • http://vouchertiket.com/airplane/ckeditor/uploads/files/42581660341.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/14bf64d114074f3b52655049c301a99f/19102072411.pdfIn PDF document text
    • http://mannadey.in/FCKeditor/file/90977903304.pdfIn PDF document text
    • https://kabelkyaobuv.sk/editor_uploads/files/buxokotakar.pdfIn PDF document text
    • http://rajicpetrol.rajic-intertrade.com/rajic/system/upload/file/56948408124.pdfIn PDF document text
    • https://eco-translation.ca/upload/editor/file/suxinumupidi.pdfIn PDF document text
    • https://www.marjojaspers.nl/ckfinder/userfiles/files/xudurur.pdfIn PDF document text
    • https://salwangurugram.com/files/64653630060.pdfIn PDF document text
    • https://krainaogrodow.eu/zdjecia/fck/file/61424292731.pdfIn PDF document text
    • http://sumbulefendiegitimvakfi.com/resimler/files/gazupotosatebuzixubef.pdfIn PDF document text
    • https://gberwanda.com/gbe/useruploads/blogs/files/52820023197.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/69809313886.pdfIn PDF document text
    • http://cbafjvn.com/uploads/userfiles/file/mizedofo.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1614380d2d04bd---vefegupinaviseveruza.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_off00046058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46058 16904 bytes
SHA-256: e8d8c3cc303b2e034cfee045b64c7e3b824873af4159accd883bd55a621ad41d
font_01_sfnt_off00048c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48C80 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0004a324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A324 10652 bytes
SHA-256: 0ff019c97257853bef2699a1b80cc84076b01c2ba339d0131a5cea5c62cfc9fd