Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dc58a9f22de6af…

MALICIOUS

PDF

87.2 KB Created: 2021-10-13 12:21:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 12edb5921c97f2588c43b920ebd49a61 SHA-1: fd7cb38b2cf9654d16628f8f9c19e7f1539a351c SHA-256: c5dc58a9f22de6af441758b1e72eea5cb5ac2f9f2ee2a16ecbe120a162700d5f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://europawindow.com/app/webroot/img/main_content/files/buvajijuzevozisunufadipe.pdf In PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/1a905e1cc8a228b2b3d09cabfa0c52c2/baderimaxesukedos.pdfIn PDF document text
    • https://www.zolmedis.lt/ckfinder/userfiles/files/33958926747.pdfIn PDF document text
    • http://seosanhrd.com/userfiles/file/zixamiponojogasadesezu.pdfIn PDF document text
    • https://keyword-lda.pt/site/upload/file/zesago.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16159782f97cce---gebefi.pdfIn PDF document text
    • http://mizuho-co.net/file/ck/files/95934749336.pdfIn PDF document text
    • http://yurisolomko.com/userfiles/file/35832623918.pdfIn PDF document text
    • http://dataprint.ie/uploads/file/bidagopudubagefolalo.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/e9b1c39cc6241dcae2efbd70558d700d/17514198442.pdfIn PDF document text
    • https://cuatudongsaigon.vn/uploads/files/kezijewutuvojufofisugawa.pdfIn PDF document text
    • http://candientushinko.com/images/file/devavasewefepitebelufak.pdfIn PDF document text
    • http://salocchi.it/userfiles/files/davadekaz.pdfIn PDF document text
    • https://pharmawell.eu/ckfinder/userfiles/files/55596393454.pdfIn PDF document text
    • http://dastone.ru/userfiles/file/89131138135.pdfIn PDF document text
    • https://cuichi177.com/uploads/files/202110071421549977.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/zezewigowese.pdfIn PDF document text
    • http://www.electricman.in/demo/frontend/web/uploads/files/18739018604.pdfIn PDF document text
    • https://ecohort.biz/userfiles/files/56677628487.pdfIn PDF document text
    • http://jewelry-shopping-city.com/uploads/files/202109110011533404.pdfIn PDF document text
    • http://bradhelferlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bewapokedol.pdfIn PDF document text
    • http://euroear.eu/ckfinder/userfiles/files/tagefixudititaterefexof.pdfIn PDF document text
    • http://ziguratex.com/helpdesk/app/webroot/img/userfiles/files/74510332589.pdfIn PDF document text
    • http://vidol.eu/userfiles/file/25078163990.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/tgwjJlsMqHc/uplcv?utm_term=how+unfollowed+me+on+instagramPDF 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_off0000eb94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB94 19400 bytes
SHA-256: f11dc42738ff973c68d287f75ee4d19256c0223e8de4737e4d92b1e58bb0069e
font_01_sfnt_off00011e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E15 10876 bytes
SHA-256: 3bfa5532ccc909d7b09bd108a1ba574bea709fafccdd833c33bf3ec36156df5e
font_02_sfnt_off00013705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13705 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1