Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afe2e2897d8c578…

MALICIOUS

PDF

76.7 KB Created: 2021-09-27 22:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 372b0546e3a9670c8fb56ca91123bb1b SHA-1: f18651056b77eb778ba14eaea0611b36260cbd0f SHA-256: 4afe2e2897d8c578920ae3217e3bb353e54b156c58c5c881f5624fdf8e2fd5f2
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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 https://ketchas.ru/uplcv?utm_term=best+light+emulator PDF link annotation
    • http://fli.edu.mn/ckfinder/userfiles/files/30606113184.pdfIn PDF document text
    • https://tolgyesvolgy.hu/userfiles/file/fodipazuvejorodofeko.pdfIn PDF document text
    • http://tks-forever.com/upload/2021/09/24/file/niposebesajopiz.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/934c8a29ff954f8e67580c7ea91431de/66086077396.pdfIn PDF document text
    • http://studioferrato.it/userfiles/files/xegagabapuk.pdfIn PDF document text
    • https://luxesystem.site/js/ckfinder/userfiles/files/jikubiwisura.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/874c4b9d4eae46b55b2e378d3d9d22bf/78943061913.pdfIn PDF document text
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/c36e5f53351f8bb9881f95ba20daef67/josimivorixubotadewo.pdfIn PDF document text
    • https://pacpartner.net/images_client/imagesfile/nawutewowusirumefunovale.pdfIn PDF document text
    • http://ohsongpharm.com/ckfinder/userfiles/files/pizoxoporat.pdfIn PDF document text
    • http://xycrusher.com/d/files/47937710955.pdfIn PDF document text
    • https://seger.cz/userfiles/file/4584753074.pdfIn PDF document text
    • https://danfort.lv/userfiles/file/82379413728.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/bizomumawivawerofiji.pdfIn PDF document text
    • https://carparts-fixture.com/file/file/98875493691.pdfIn PDF document text
    • http://jatyn.cn/upfiles/202109/file/1632395302.pdfIn PDF document text
    • http://tdsns.ru/userfiles/file/20986819785.pdfIn PDF document text
    • http://tentauto23.ru/ckfinder/userfiles/files/sokovadenilenevu.pdfIn PDF document text
    • http://gpba.ge/admin/ckeditor/ckfinder/userfiles/files/leloropape.pdfIn PDF document text
    • http://refinerlink.com/userfiles/file/turewatemagozeluzuj.pdfIn PDF document text
    • http://adirondackseafood.com/ckfinder/userfiles/files/zimazipi.pdfIn PDF document text
    • http://gidaero.com/upload/fckeditor/file/23724974923.pdfIn PDF document text
    • https://teamcode.net/upload/files/61738272878.pdfIn PDF document text
    • http://mail.teleserviciomalaga.com/ckfinder/userfiles/files/35659748537.pdfIn PDF document text
    • https://bonekarusa.com/contents/files/dozaditovepagilig.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_off0000c22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC22C 10604 bytes
SHA-256: ce63bb8628871d762ac4528202a0ae6e98e199cb239ed84b4680b5149e808bc8
font_01_sfnt_off0000da72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA72 19308 bytes
SHA-256: ff3f74bd7d5673f3a7c284fef05b5667d8df9df2d2e8396e869c05ffc717d43d
font_02_sfnt_off00010d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1