Malicious PDF — malware analysis report

Static analysis result for SHA-256 4877ae666e805cc8…

MALICIOUS

PDF

351.5 KB Created: 2022-03-26 11:17:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-22
MD5: 1725aae319eafc94abd013de951a1088 SHA-1: 3713a5de9bbbf48ae675392d9fb5259e0c575be2 SHA-256: 4877ae666e805cc8f91472fc24e9ab9eb959f82d72cab709081239b17d5b0749
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7397

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://limeitec.com/upfiles/editor/files/72418851057.pdf In PDF document text
    • https://fsbulletsandbrass.com/userfiles/files/960745611.pdfIn PDF document text
    • http://saipanbooking.com/FileData/ckfinder/files/20220209_E825CC8AFEB8CBC4.pdfIn PDF document text
    • https://antiquites-opio.com/kcfinder/upload/files/30628310235.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1623485f1adf49---gutomiru.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16227b42588ca2---gebipimosin.pdfIn PDF document text
    • https://educhina.mn/editor/files/4336073056.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/lilifamiz.pdfIn PDF document text
    • http://beautystyln.jp/uploads_file/files/kipujoj.pdfIn PDF document text
    • http://ttworld.hu/uploads/content_files/files/34258630252.pdfIn PDF document text
    • http://fapannimario.it/userfiles/files/liwubi.pdfIn PDF document text
    • http://dayou.tw/uploadpic/files/202202102100538504.pdfIn PDF document text
    • http://yesfabric.com/images/upload/File/bevemadopubu.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620fc14330ee0---73120250137.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/64869701da8487ed093bcb1fd857e79d/rewilidit.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1621276addf3ed---96834595904.pdfIn PDF document text
    • http://www.bioengenharia.com.br/public/libs/kcfinder/upload/files/9234766845.pdfIn PDF document text
    • http://tecnoservizi.com/userfiles/files/femupapupefinasuvovi.pdfIn PDF document text
    • https://www.transportesoro.com.co/admin/plugins/ckeditor/kcfinder/upload/files/53855083258.pdfIn PDF document text
    • http://101eyewear.com/luutru/files/94134039953.pdfIn PDF document text
    • http://www.anpecv.es/gestor/ckeditor/kcfinder/images/files/11709276115.pdfIn PDF document text
    • https://www.sdhbd.org/backend/web/kcfinder/upload/files/fejobaferinigifurivof.pdfIn PDF document text
    • https://www.danielbarboza.com.br/v2/meuAdmin/inclusos/plugins/ckeditor/plugins/kcfinder/upload/files/36584601225.pdfIn PDF document text
    • http://marleenjansen.nl/images/uploadfiles/61753429573.pdfIn PDF document text
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/14867870381.pdfIn PDF document text
    • https://paixaodecristopi.cinemadossertoes.com/kcfinder/files/83332517497.pdfIn PDF document text
    • http://safarang.com/basefile/files/jenegavojutetiv.pdfIn PDF document text
    • http://bangtutrang.com/upload/files/juwugilosavojinirobodowaf.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16211327c152b8---25318783381.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/30536071388.pdfIn PDF document text
    • https://eownauto.com/uploadpic/files/88881357206.pdfIn PDF document text
    • https://tevav.co.za/XSRYdR1H?utm_term=new+cutting+edge+intermediate+book+pPDF 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 extracted file (font_00_sfnt_off00050940.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00050940.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50940 11036 bytes
SHA-256: 349502216ef7978889b59a38c046322ea75482a52875c0db07f1282842ae4bef
font_01_sfnt_off0005228d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5228D 19752 bytes
SHA-256: 4084678746577fab30021a4898c9da7927705e973ab6a3e08b54be795f441a4e
font_02_sfnt_off0005575a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5575A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9