Malicious PDF — malware analysis report

Static analysis result for SHA-256 425da5f9a481035d…

MALICIOUS

PDF

93.3 KB Created: 2021-10-20 10:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 1c8bb9d1a72a85b6c2e6d91c89c5de72 SHA-1: 89338e3f14adf647924e838dba1aedefec6bd81c SHA-256: 425da5f9a481035defa91fc6886741b26cd7d8c44d28b03a824b4242a67bbab9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1616a72cb9601f---sifun.pdf In PDF document text
    • http://kuwaited.com/cote_dor_import/admin/ckfinder/userfiles/files/gasuma.pdfIn PDF document text
    • http://shamayachts.com/upload/file/laloniwuj.pdfIn PDF document text
    • https://myarchitect.es/ckfinder/userfiles/files/92403852892.pdfIn PDF document text
    • http://1mosref.ru/ckfinder/userfiles/files/vonesufuxo.pdfIn PDF document text
    • http://www.yt333.com/userfiles/20210911/file/1631364128.pdfIn PDF document text
    • http://customize.fr/fckeditor/editor/filemanager/connectors/php/img/Editor/file/puxezuwidixilinapone.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134a86ec6c5d---toximawod.pdfIn PDF document text
    • https://ashasuchikala.com/ckfinder/userfiles/files/ruvebigu.pdfIn PDF document text
    • http://toyteepee.com/uploadfiles/file/210911212148647159a1fkse.pdfIn PDF document text
    • http://mibenjamin.com/userfiles/file/gisaziwuxi.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/69579712537.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161492897bf2db---30419698417.pdfIn PDF document text
    • http://netinflux.net/userfiles/file/puxaxufukamudukonuxom.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145c41925615---7195934328.pdfIn PDF document text
    • http://floramarble.com/uploads/donuraka.pdfIn PDF document text
    • http://joyerialaplaza.com/ckfinder/userfiles/files/faxovijujogigumurexarimed.pdfIn PDF document text
    • http://1utilaje.ro/mm/file/nugifekodirite.pdfIn PDF document text
    • http://tpt.taipei/asset/uploads/files/zexunupevobude.pdfIn PDF document text
    • http://adhdesign.de/userContent/files/20210928130111-dugegifokinovidakajona.pdfIn PDF document text
    • http://tuvanthanhlapcongty.biz/upload/ck/files/19912105872.pdfIn PDF document text
    • https://nayyaralidada.net/alpha/ckfinder/userfiles/files/61780691729.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1613c3648250bc---tajujova.pdfIn PDF document text
    • http://sterenstein.ru/userfiles/file/mabogi.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/u-9XGpgKpwY/uplcv?utm_term=chamberlain+liftmaster+formula+1+manualPDF 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 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_off0000fcd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD5 22360 bytes
SHA-256: e706d406c4f664cf710bb3e0c76b0046f287abe708c4643f717e86f3bbdd03ea
font_01_sfnt_off00013699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13699 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EB0 10804 bytes
SHA-256: b04b4be423b1cc9776db8796186b223b2d8a36c3ce48678c71ec77ad00f38d43