Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87b18a1670bc197…

MALICIOUS

PDF

75.8 KB Created: 2021-12-08 23:19:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 217b81b6addcf02c5216d04a97d19d4a SHA-1: 67ecfe5b5f360bd8bec8509b589169b4f7b603ce SHA-256: f87b18a1670bc197f49f2bf6c342fb352d38c15b93fc605fc297e60975fb6d8a
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • 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.
  • 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 http://www.ezmoving.com/file/15483245892.pdf In PDF document text
    • http://dvg.asia/ckfinder/uploadfiles/files/76094680779.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/99646540775.pdfIn PDF document text
    • http://riph.pl/userfiles/file/lexaseta.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/42751277058.pdfIn PDF document text
    • http://kleinschadenexpert.com/userfiles/file/konedasenelitezovas.pdfIn PDF document text
    • http://www.ville-dammarie.com/ckfinder/userfiles/files/sorenopobugu.pdfIn PDF document text
    • http://trungtamsangloc.vn/uploads/ck_upload/files/gizoxas.pdfIn PDF document text
    • https://chilegastronomia.cl/uploads/userfiles/files/17373709091.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/d7fbe37c6607d21e5f53f8a5c72981dd/dasilanosogamidulalisu.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1615227b764e53---33951557090.pdfIn PDF document text
    • https://www.ijestr.com/ckfinder/userfiles/files/domabifunaritidugobez.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16193be3481de5---voxoriveze.pdfIn PDF document text
    • http://sromedical.com/file_media/file_image/file/finazevoregaloj.pdfIn PDF document text
    • http://hurtmar.pl/Upload/file/rumozaxuxinigudojej.pdfIn PDF document text
    • http://xlith.com/userfiles/files/22173104561.pdfIn PDF document text
    • https://villamishkan.com/310renonew/front/images/files/zogezamim.pdfIn PDF document text
    • http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/bexuwusinokavatejikotasaf.pdfIn PDF document text
    • http://learningkey.org/userfiles/85065544752.pdfIn PDF document text
    • http://educasters.co/ckfinder/userfiles/files/20339042774.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/sodazobabonar.pdfIn PDF document text
    • https://krainaogrodow.eu/zdjecia/fck/file/83153264706.pdfIn PDF document text
    • https://podimercrm.com/img/files/13506934686.pdfIn PDF document text
    • http://sromedical.com/file_media/file_image/file/bifesijib.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/oscUj7J0Gjw/uplcv?utm_term=modern+cabinet+making+5th+edition+pdPDF 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_off0000c5b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B7 16868 bytes
SHA-256: fc5739c262427a22e2ae5fa87e38109928a1a22e19bc9bb3106499f3ef3716c7
font_01_sfnt_off0000f1b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B4 11104 bytes
SHA-256: 06d526128f1db54f4664fb509984f58468f18ae9f3390fdfd0e14b39c6b91a69
font_02_sfnt_off00010b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B04 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336