Malicious PDF — malware analysis report

Static analysis result for SHA-256 f998b001dc08d0a0…

MALICIOUS

PDF

71.8 KB Created: 2021-09-09 06:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: d7be7ed3b123b43f03fb1e4cd027ab84 SHA-1: 912c77b8d05605f351f99ac72a299bbd8730140c SHA-256: f998b001dc08d0a0e7e36570d93ac2b6e71f481799241206bd72acce59585fb3
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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://laborke.ru/uplcv?utm_term=android+studio+sdk+64+bit+download PDF link annotation
    • http://www.superior-inkjet.com/login/ckfinder/userfiles/files/36435074345.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/vumereporoxiladekadi.pdfIn PDF document text
    • https://dpt-mh.com/uploads/news/files/dowonabejuxexoribenap.pdfIn PDF document text
    • http://wadsoda.com/UserFiles/File/16689088686.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161315a8a36402---40128577710.pdfIn PDF document text
    • http://dzirerealtors.com/uploads/46572431444.pdfIn PDF document text
    • https://nazragame.com/calisma2/files/uploads/5055886623.pdfIn PDF document text
    • https://zmiz.hr/userfiles/file/jadamepi.pdfIn PDF document text
    • https://kga-am-adlergestell-ev.de/kga/ckfinder/userfiles/files/tojafusemijaxipubeditu.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/8kgt3bgn10t51ab9piuhmk8u9s/zusobutamomatebusituzupit.pdfIn PDF document text
    • http://grupophi.es/uploads/files/ravujowuxe.pdfIn PDF document text
    • https://dom4m.lv/userfiles/files/62154334390.pdfIn PDF document text
    • http://mgocsm.in/userfiles/file/89572262746.pdfIn PDF document text
    • http://clinicaveterinariabilancino.it/userfiles/files/xubelomutaw.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16135106a74b15---51781063051.pdfIn PDF document text
    • http://kirsanov-maslo.ru/uploads/golegiwezasaxuvomuteb.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/lu44a28n0h1srpcf31g3usnoal/fozivivej.pdfIn PDF document text
    • https://infotechb2blite.com/bot/ckfinder/uf/files/samajaluzer.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/babe447952772739bcc3024d29768a84/14853672.pdfIn PDF document text
    • http://prttour.ca/FileData/ckfinder/files/20210902_55399ECF67A584E1.pdfIn PDF document text
    • http://myarrahnu.com/mo_images/files/wagiratejunox.pdfIn PDF document text
    • http://yejida.com/userfiles/file/21952061465.pdfIn PDF document text
    • https://xuantruongtech.com/images/ckeditor/files/pexufusutugewojujufakafa.pdfIn PDF document text
    • https://ventsistem-bg.com/userfiles/file/jonixosufiwi.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613604e9f389b---22495125750.pdfIn PDF document text
    • http://xn--h1agcmh.com/ckfinder/userfiles/files/bogubikiregolaka.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_off0000b35e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB35E 10756 bytes
SHA-256: fe0fa450aebcf77aa5e3769b2e83ff6391d17da40f9fe0043baa69e802eb5896
font_01_sfnt_off0000cc5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e46c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46C 17440 bytes
SHA-256: fe16cd88cd2bbe01e1d5515d58139d2c48b3113374628b703a0cd4f822589401