Malicious PDF — malware analysis report

Static analysis result for SHA-256 550bffead8581083…

MALICIOUS

PDF

79.3 KB Created: 2022-04-07 22:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 28032d268cfc4944fe6e0057e4d12daa SHA-1: 27164f0ae8c607f6594c2ad53faa2b3a465bbd56 SHA-256: 550bffead858108352d95b0e828de779294fb8fd433e1169d2815c47cba7e102
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lovig.co.za/YmrXLWy8?keyword=conventions%20in%20writing%20worksheets PDF link annotation
    • https://rifejirofedum.weebly.com/uploads/1/3/4/7/134763588/7874152.pdfIn PDF document text
    • https://mefifusefom.weebly.com/uploads/1/3/4/2/134266023/9423004.pdfIn PDF document text
    • https://xetutimi.weebly.com/uploads/1/3/0/9/130968997/1414945.pdfIn PDF document text
    • http://lindendirect.com/ckfinder/userfiles/files/8170699686.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622d064a3963f---dabuzojetuporikixekemufus.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/alq3bno1m694h6tn45c52c20o7/19606677875.pdfIn PDF document text
    • https://zegojigonixuw.weebly.com/uploads/1/3/4/6/134631084/lovagezer.pdfIn PDF document text
    • https://razasojesiwanet.weebly.com/uploads/1/3/4/3/134377469/7418336.pdfIn PDF document text
    • https://babewepuk.weebly.com/uploads/1/3/4/3/134311046/pidezod-kulagenol-nixaviwexenoga.pdfIn PDF document text
    • https://toxoxazagole.weebly.com/uploads/1/3/0/9/130969938/dagezebuzubo.pdfIn PDF document text
    • https://loyalangkorapartment.com/userfiles/file/40046990835.pdfIn PDF document text
    • https://zanikegira.weebly.com/uploads/1/3/1/4/131437850/sifimezalap-sojiwifikis.pdfIn PDF document text
    • https://tuxofebixojip.weebly.com/uploads/1/4/1/2/141254886/3613058.pdfIn PDF document text
    • https://www.ibbfvhn.org/recursos/kcfinder/upload/files/zimojan.pdfIn PDF document text
    • https://suwuvonujijipi.weebly.com/uploads/1/3/4/0/134042364/2904410.pdfIn PDF document text
    • https://vejesare.weebly.com/uploads/1/3/4/4/134493146/nituzep.pdfIn PDF document text
    • https://zulazuxalumino.weebly.com/uploads/1/3/1/6/131606396/jitenedora.pdfIn PDF document text
    • http://kondicionery-ivanteevka.ru/upload_picture/file/gikabukefovira.pdfIn PDF document text
    • https://wuletalevuvefam.weebly.com/uploads/1/3/1/3/131379877/9e51183a.pdfIn PDF document text
    • http://ipsc-pv.cz/kcfinder/upload/files/bojofasefofojomugaba.pdfIn PDF document text
    • https://xudowiwigikit.weebly.com/uploads/1/3/4/4/134462868/4ae651ca64eb2.pdfIn PDF document text
    • http://diegogenna.it/userfiles/files/71849751382.pdfIn PDF document text
    • http://ylgems.com/file_media/file_image/file/kakoriseragewafapeboka.pdfIn PDF document text
    • https://naruripevaxiwus.weebly.com/uploads/1/4/1/3/141334759/5359880.pdfIn PDF document text
    • https://palepolute.weebly.com/uploads/1/3/5/9/135963306/5fc0681.pdfIn PDF document text
    • https://sukivafuxek.weebly.com/uploads/1/3/0/8/130874221/3bb498.pdfIn PDF document text
    • https://baboxubawuxi.weebly.com/uploads/1/3/4/6/134666135/wovow.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 extracted file (font_00_sfnt_off0000d279.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d279.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD279 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8B 17208 bytes
SHA-256: 49fe3719f09b3d874142e08bbdefac4e226982f7d54d3dbb5d91b16f5e8de0aa
font_02_sfnt_off00011744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11744 10452 bytes
SHA-256: 2ae4e97fd2b36cc8f131d4f5dbfabc7dd257b1b1a724b3379347ef2648dc5701