Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af12c9c27180dae…

MALICIOUS

PDF

73.0 KB Created: 2021-11-08 23:36:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 9d9ba98efb3322a87072321247314f8c SHA-1: bd3dd816e60d6bdef7135aaa5df03b3cf54ad585 SHA-256: 4af12c9c27180daeb1e740f8e3018541f46e2e6ffa60ba374a5b2930a7be1bf0
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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
  • 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://baozhaopharm.com/upload/files/8008315078.pdf In PDF document text
    • https://goldfieldssanddrags.com.au/ckfinder/userfiles/files/fevitenazakopomijudate.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/gk63vlov5otd8qedlt1uboa0v7/70312947017.pdfIn PDF document text
    • https://cuacuonbentre.com/upload/files/bofewewana.pdfIn PDF document text
    • http://vattuxaydunghl.com/userfiles/file/69875908847.pdfIn PDF document text
    • https://esperanzadeavila.com/fotos/file/gulopubinabepob.pdfIn PDF document text
    • http://jacsonsfurniture.com/userfiles/file/xusuva.pdfIn PDF document text
    • http://daimarconstrucciones.com/images/admin/file/kigobobibikekuwef.pdfIn PDF document text
    • http://shqinze.net/admin/upimg/file///84748346098.pdfIn PDF document text
    • http://www.hkrns.org.hk/ckfinder/userfiles/files/59825825106.pdfIn PDF document text
    • http://3dsami.org/uploadfilefiles/xerusugowabogutupix.pdfIn PDF document text
    • http://depcip.com/app/views/panel/ckfinder/userfiles/files/52271993188.pdfIn PDF document text
    • http://sz-frp.com/pic/2021100210115343.pdfIn PDF document text
    • http://vinag7furniture.com/app/webroot/files/editor_upload/files/mugolepos.pdfIn PDF document text
    • http://interface-referencement.com/userfiles/file/voxaf.pdfIn PDF document text
    • http://athaj2.specialty-match.com/upload/files/tekotapasowerul.pdfIn PDF document text
    • https://www.fibertech1.com/my_content/js/ckfinder/userfiles/files/11001672513.pdfIn PDF document text
    • https://cebubigsellers.com/userfiles/file/51340329751.pdfIn PDF document text
    • http://bretagne.annuaire-regional.com/ckfinder/userfiles/files/bizolav.pdfIn PDF document text
    • http://namhungholdings.com/uploads/ckfinder/files/66585648847.pdfIn PDF document text
    • http://foxadv.net/file/78863944443.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613295f04e147---waxuruvebujotufawem.pdfIn PDF document text
    • http://sipzip.com/userfiles/file/bipejedezukoxapo.pdfIn PDF document text
    • http://bio86.fr/userfiles/fichiers/15211372909.pdfIn PDF document text
    • http://jualumnitoronto.com/editor/uploadfiles/352779143.pdfIn PDF document text
    • http://abwingsmd.com/uploads/files/15534632524.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/xPAns0MRe5M/uplcv?utm_term=reasoning+ques+with+answerPDF 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_off0000b8cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8CF 10720 bytes
SHA-256: 2e1aeaf29e067ed11c41ced5f4e7cab2a01d728c67d2123368654f3af71b371b
font_01_sfnt_off0000d123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD123 17224 bytes
SHA-256: dbe8c119e1dff86f25cee852520de1506d83bced191ff16d942cf825e46bf90d
font_02_sfnt_off0000fdf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF2 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef

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