Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f7de23041d4f38…

MALICIOUS

PDF

99.9 KB Created: 2022-04-10 21:34:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: f0e209e7208511060a3bf877f8b90bd1 SHA-1: 2fe7929a2f61554ac93e72c183fbcebbf113a964 SHA-256: a4f7de23041d4f38f6a0703c1b43677c9175ffdd59caf26e09aee3bd22b2976b
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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 https://cafij.co.za/YmrXLWy8?keyword=olympus%20stylus%20tough%20tg-4%20accessories PDF link annotation
    • http://tmkb.org.tr/ckfinder/userfiles/files/93842621131.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/gikepoxuwe.pdfIn PDF document text
    • http://dzido.pl/userfiles/file/foxotonij.pdfIn PDF document text
    • https://doanhnghiepvietnam.niengiamdoanhnghiep.vn/img_duhoc/files/ragirezafonedivizogik.pdfIn PDF document text
    • https://gunesakozi.weebly.com/uploads/1/3/0/9/130968934/vanobep_gadoxajomakebi_wemifasedazob_befuwomozu.pdfIn PDF document text
    • https://mefusinumobidal.weebly.com/uploads/1/3/4/6/134679396/12a54002b9f.pdfIn PDF document text
    • http://ipceurope.be/assets/file/28654934399.pdfIn PDF document text
    • https://besusawoses.weebly.com/uploads/1/3/5/3/135318815/5970324.pdfIn PDF document text
    • http://kungfubp.hu/admin/assets/images/files/xegeledijutirumevew.pdfIn PDF document text
    • https://siettsantamarta.com/ckfinder/userfiles/files/2268092515.pdfIn PDF document text
    • http://brothersconsultingllc.com/kcfinder/upload/files/57427823523.pdfIn PDF document text
    • https://wadexusi.weebly.com/uploads/1/3/4/4/134440973/lizopotur-puviju.pdfIn PDF document text
    • https://jelamiwigu.weebly.com/uploads/1/3/1/3/131382248/numokajugoxeranomi.pdfIn PDF document text
    • http://eepr.cz/upload/files/55601024884.pdfIn PDF document text
    • https://onecre.com/images/content/files/80053651966.pdfIn PDF document text
    • https://tagosijotibaza.weebly.com/uploads/1/3/1/4/131407106/napokogewakujus-dolesu.pdfIn PDF document text
    • https://laruxabu.weebly.com/uploads/1/4/1/2/141281781/9573215.pdfIn PDF document text
    • https://fokatofevi.weebly.com/uploads/1/3/2/7/132712268/jokawet_jebixisob_zixobagibodo_furevizuji.pdfIn PDF document text
    • https://innoversant.com/userfile/file/ruxaragapozu.pdfIn PDF document text
    • https://cortado.funeralinnovations.com/copilots/upload/files/tifatasus.pdfIn PDF document text
    • https://kenkochaya.com/user_data/ckfinder/files/xopubajiwadatisiki.pdfIn PDF document text
    • http://rovitek.com/userfiles/file/2205124417.pdfIn PDF document text
    • http://nayyaralidada.com/alpha/ckfinder/userfiles/files/65303241548.pdfIn PDF document text
    • https://lidugozomamaxo.weebly.com/uploads/1/3/1/6/131606349/8123879.pdfIn PDF document text
    • https://felicityokolo.com/file/27279948443.pdfIn PDF document text
    • http://ctm.it/userfiles/file/turovagitetorobufife.pdfIn PDF document text
    • https://iskoruma.com/upload/ckfinder/files/fokiforajul.pdfIn PDF document text
    • https://www.yukule.com/ToBeDeleted/admin-assets/js/ckeditor_4.6.2_standard/kcfinder/upload/files/76153600638.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_off00011cfd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00011cfd.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFD 18808 bytes
SHA-256: cd7b1dffc505ed667e56e43c0c404d511075e6873a97933294f10c8e1c4a8650
font_01_sfnt_off00014f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F04 11068 bytes
SHA-256: 12a1ee01c1942f5b0afc1fcaa942ffe18e85b6a429c7425d5fd0df4f2bf1a666
font_02_sfnt_off000168f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1