Malicious PDF — malware analysis report

Static analysis result for SHA-256 4254188e05b51e26…

MALICIOUS

PDF

73.0 KB Created: 2021-11-21 05:10:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: f8f3ab7f362f18f8d8db6f7400081fa5 SHA-1: 014c6b4d86605fa3e3b068e6813397841e30e339 SHA-256: 4254188e05b51e26f993855ddc9d8fe1d9b2927e35c33fbf9a25a26eab99c5c6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://yesilkoyluleriz.biz/resimler/files/tixakipesopimokemegap.pdf In PDF document text
    • https://partroyfuneralhome.com/partroy/assets/file/geludi.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614953afd6ec8---23783644872.pdfIn PDF document text
    • https://aspaeng.com/files/image/files/jasixemunitozojiludikem.pdfIn PDF document text
    • http://zhongjiukeji.com/upload_fck/file/2021-11-7/20211107180834817474.pdfIn PDF document text
    • https://31app.com/userfiles/file/2937965983.pdfIn PDF document text
    • http://studiobonvino.com/userfiles/files/vatulelapamuvojuzujak.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/2n6jjfg88ie594ol1o245q3h4c/gabodiwexo.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616c77c2e0e4d---7373666488.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/mpceb3jovepkckpo5pg00povg2/65496640955.pdfIn PDF document text
    • https://sssmri.com/ckfinder/userfiles/files/60458657766.pdfIn PDF document text
    • http://tzsunup.com/upload/zegavoxuzatedeneguwop.pdfIn PDF document text
    • https://tiemhoamo.com/data/dulieu/files/ronubiwiwa.pdfIn PDF document text
    • http://top-rubber.com/admin/fckeditor/editor/filemanager/connectors/upload/file/17598437828.pdfIn PDF document text
    • https://safe-international.com/userfiles/file/pukufoziwevezopedu.pdfIn PDF document text
    • http://audyt.rowerowaszkola.pl/imgturysta/files/nobipagapelulalivem.pdfIn PDF document text
    • http://nagymester.com/userfiles/file/lafovixerinarof.pdfIn PDF document text
    • https://webhosting4.net/media/file/69000632196.pdfIn PDF document text
    • http://1yunnan.com/ckfinder/userfiles/files/82855890405.pdfIn PDF document text
    • http://hattingtoemrerogsnedker.dk/userfiles/file/mutozumakurajolewede.pdfIn PDF document text
    • http://czechnews.cz/userfiles/files/36675168957.pdfIn PDF document text
    • https://alrukn.co/userfiles/files/62704206228.pdfIn PDF document text
    • https://livewireeventz.com/userfiles/file/xexefumaneveruxegisevi.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/BGAemAmcdTc/uplcv?utm_term=this+simple+lifePDF link annotation
    • http://irodori.kir.jp/files/file/folug.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_off0000bd10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD10 17464 bytes
SHA-256: e709b24642728a5ee839756bd73d08c1aa8dc27f1420137e8425c2092f089a66
font_01_sfnt_off0000ea3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3B 10000 bytes
SHA-256: fa2460a3c154e7fc88a7c6b515757054b8ed7316abf2359e46e58a7fc3d8e697
font_02_sfnt_off0001005a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005A 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336