Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f99d2dfbe78d53…

MALICIOUS

PDF

76.1 KB Created: 2022-05-07 21:01:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 394785158a7b847a1cad23658f456d5a SHA-1: 765fbbd602c4cf7275d0325d0e905efacabb4f49 SHA-256: a4f99d2dfbe78d533ce7326dc2d94b57b966120b9145a70fb18b3a04c821d790
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9888

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://cafij.co.za/YmrXLWy8?keyword=idempiere%20installation%20guide%202020%20pdf%20download PDF link annotation
    • http://brilspa.ro/userfiles/file///pakusakilu.pdfIn PDF document text
    • https://wadezadoli.weebly.com/uploads/1/3/0/9/130970015/2bf05a.pdfIn PDF document text
    • http://pflp-sy.org/assets/js/admin/ckeditor/kcfinder/upload/files/kewawofutegedegedidomasu.pdfIn PDF document text
    • http://mgok.jutrosin.eu/userfiles/file/27229457989.pdfIn PDF document text
    • http://groupburuemas2.com/contents/files/12744485097.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16214420e369b7---28363127149.pdfIn PDF document text
    • http://4bx.pl/public/file/wenisukofusinolaterorot.pdfIn PDF document text
    • https://wivopapam.weebly.com/uploads/1/3/6/0/136082265/5243446.pdfIn PDF document text
    • https://koxagirokutan.weebly.com/uploads/1/3/4/6/134625301/8687517.pdfIn PDF document text
    • http://gzichina.com/ckfinder/userfiles/files/sisori.pdfIn PDF document text
    • https://szkolazapasem.we.pl/pliki/files/73592299292.pdfIn PDF document text
    • http://xn----9sbbnbtte4cyg.xn--p1ai/ckfinder/userfiles/files/nesumajijogewixarari.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/topusofamekusezuzajota.pdfIn PDF document text
    • http://gerd-pollak.de/userfiles/file/zikesepupek.pdfIn PDF document text
    • https://damupese.weebly.com/uploads/1/3/4/4/134492451/4b84eafce.pdfIn PDF document text
    • http://hevolta.com/upload/file/migejotisore.pdfIn PDF document text
    • https://xizudelif.weebly.com/uploads/1/4/1/5/141543282/maxuxezubeje.pdfIn PDF document text
    • https://newsru.md/upload/userfiles/files/67983767854.pdfIn PDF document text
    • http://sinojjacob.com/userfiles/file/22674135956.pdfIn PDF document text
    • http://flooroverstock.com/admin/userfiles/file/44846159344.pdfIn PDF document text
    • http://casadiriposopuegnago.it/admin/data/files/files/38980552007.pdfIn PDF document text
    • http://tongchangkj.com/uploadfile/file///2022041616150060.pdfIn PDF document text
    • https://fsreloading.com/userfiles/files/raxusirategaz.pdfIn PDF document text
    • http://canadanur.com/resimler/files/rajevumuganamadexefivuraz.pdfIn PDF document text
    • https://stabiactiv.com/userfiles/file/99094246350.pdfIn PDF document text
    • http://www.taylormadetc.com/siteadmin/ckfinder/userfiles/files/48953807626.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 extracted file (font_00_sfnt_off0000c0d9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c0d9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0D9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d8f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F0 11220 bytes
SHA-256: 20e7435865598a213ddc087efc4b0d9a13d609919493ea370e1d79413f791382
font_02_sfnt_off0000f314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF314 17280 bytes
SHA-256: 5ea721936315e8f682b268dc40ab4d2f48f8ddb6c722512e8ad4607adf363ef4