Malicious PDF — malware analysis report

Static analysis result for SHA-256 191ca3a62d7dc99b…

MALICIOUS

PDF

81.6 KB Created: 2021-09-10 18:11:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: ae9a6d9e8d0583023f9c6e3970936162 SHA-1: cb6a0e54648c9281ff692937c603cc72a86c332e SHA-256: 191ca3a62d7dc99bb8e5c253d6ae6f4410b36c662c87d9be8afecde8566086ce
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://aljuboori.com/userfiles/files/sodutupofagu.pdf In PDF document text
    • https://fokusmedia.com/images/uploads/98089168440.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/b1ce3a47d123b644eaf1385c9117f5dd/46877752371.pdfIn PDF document text
    • https://arerp.kr/data/file///nigaparivazuxu.pdfIn PDF document text
    • http://semanbio.com/upload/files/jipukosebuderanidurewepi.pdfIn PDF document text
    • http://damnoen.com/ckfinder/pho/files/wapunopumesupaxozira.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613855a31cc50---24042242826.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16132381738a16---fazesujudivukolodisifi.pdfIn PDF document text
    • http://kenhuffbuilders.com/userfiles/file/51924601171.pdfIn PDF document text
    • http://xn--42-jlclgg6a3e.xn--p1ai/userfiles/file/32211427480.pdfIn PDF document text
    • https://florerialafloresta.com/ckfinder/userfiles/files/83243213882.pdfIn PDF document text
    • http://nanobubblevietnam.com/uploads/userfiles/file/rogudasomitebilu.pdfIn PDF document text
    • http://www.extramas.com/userfiles/files/tolalirepajenaga.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/7hke47h2mknj6fhqla56ulnis7/dasibumelibofubuxufos.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161394cc0b6781---luzipu.pdfIn PDF document text
    • http://dpnovelty.com/upload/files/vusoxirumalugulaw.pdfIn PDF document text
    • http://shimamura-mail-order.com/userfiles/file/74296961776.pdfIn PDF document text
    • https://laptopserwis.com/app/webroot/media/files/39406485208.pdfIn PDF document text
    • http://airelimpio.mx/img/editor/file/64500136752.pdfIn PDF document text
    • http://snnet.kr/board_pds/fckeditor/2021/09/file/winefajalikemuxewabap.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/90996466586.pdfIn PDF document text
    • https://edu-mate.kr/_UploadFile/Images/file/nowuzomatejelibefozu.pdfIn PDF document text
    • https://creativenursery.net/home/creative/public_html/ckfinder/userfiles/files/72101788675.pdfIn PDF document text
    • https://fajndoktor.cz/images/file/files/janenipas.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+save+docx+as+pdfPDF 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_off0000dc38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC38 10516 bytes
SHA-256: 270b8e091aeafe75a71405b4a72540f23608f6ba824a1d772dd15330d38f30f8
font_01_sfnt_off0000f45b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6D 17168 bytes
SHA-256: 498b299bebb6a6164714e54edece2d6035dc0dfbc53dffb63bec41c3bdbbf55f