Malicious PDF — malware analysis report

Static analysis result for SHA-256 191474993c9b67d1…

MALICIOUS

PDF

74.8 KB Created: 2021-10-17 23:07:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 70ebf4dd9157fd10cc2d7eb7bffdf21f SHA-1: eef305c150bd992dadfb711ff745b3c1a7eba58f SHA-256: 191474993c9b67d1ce59a4bb6f2355e711ba1ab27e6b69c7d4be423ee1d0c2fa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 5

  • 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.
  • 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://krisoc.ru/uplcv?utm_term=the+adjective+clause+worksheet PDF link annotation
    • http://misterholidaysanprisco.it/userfiles/files/5851004769.pdfIn PDF document text
    • https://kvizek.excore.hu/ckfinder/userfiles/files/28130781354.pdfIn PDF document text
    • http://palirna-frydek.cz/uploaded/file/50040934606.pdfIn PDF document text
    • http://the-bom.kr/upfile/files/79728423972.pdfIn PDF document text
    • http://at2apigroup3.com/contents/files/37650225882.pdfIn PDF document text
    • http://wecans.net/_UploadFile/Images/file/jazovulajatelupipadivobi.pdfIn PDF document text
    • http://mdfgiare.com/upload/files/kojunuziduwokunuwejasife.pdfIn PDF document text
    • http://satthachkhe.vn/image/file/21088196928.pdfIn PDF document text
    • https://barrier.exma.cl/ckfinder/userfiles/files/nibexifijerefomubi.pdfIn PDF document text
    • http://elard-group.com/ckfinder/userfiles/files/duzideburodi.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/8mrqscntonc8v02os1fvs0lh6p/xipuwa.pdfIn PDF document text
    • http://ltpbetel.ro/userfiles/file/vumonuwapasizafegado.pdfIn PDF document text
    • http://mikllc.mn/uploads/files/dogaloka.pdfIn PDF document text
    • http://soeurs-scjboran.fr/soeurs/upload/files/wakis.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137cab7d8fba---19220018214.pdfIn PDF document text
    • http://bhhangkhong.com/upload/images/files/saberakipipizufegux.pdfIn PDF document text
    • https://activepymes.com/pub/file/tibezavupalez.pdfIn PDF document text
    • http://teplorium.su/userfiles/file/xibopopoxufonugidu.pdfIn PDF document text
    • http://eluvial.com/sites/all/sites/eluvial.com/files/99273897996.pdfIn PDF document text
    • http://bharatandcompany.in/ckfinder/userfiles/files/xoralogarejoxitojas.pdfIn PDF document text
    • http://palami.by/images/file/vumisutawulifob.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210904065648283.pdfIn PDF document text
    • http://justsayhi365.com/uploads/file/24362117425.pdfIn PDF document text
    • https://actsonics.com/uploads/files/202109150719273320.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_off0000c10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC10F 10800 bytes
SHA-256: 86bf45589ce78c1cb85b37f42da55402d7f966a123fbe0641ea8cf56ba7f20c2
font_01_sfnt_off0000da1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF230 16656 bytes
SHA-256: e2e8d4167a4c8611d34d347b8cd50553137fbbc2cb0b9c852da556adac52af5d

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