Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6c86c9bf154877…

MALICIOUS

PDF

82.4 KB Created: 2022-04-01 05:16:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: b1e1c852bfba5122d4de7ca3ff1873ee SHA-1: 3090fcc4f5c780a384ad8c91220d58fc610d0e31 SHA-256: 8f6c86c9bf1548770508ad5fe0f33f1ba4d02975ac5c0a0884757b792bb2c6d8
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 7

  • 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.
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • 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://yubit.co.za/YmrXLWy8?keyword=how%20do%20u%20find%20the%20volume%20of%20a%20cuboid PDF link annotation
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/162288a8d6d492---60531180811.pdfIn PDF document text
    • https://elitstroycraft.ru/source/file/39033033766.pdfIn PDF document text
    • https://mixajogidevo.weebly.com/uploads/1/3/0/9/130969427/dojejurutipowirenawo.pdfIn PDF document text
    • http://rafis-kadyrov.ru/uploads/files/patujisitudujatudewapa.pdfIn PDF document text
    • https://tafuposavibado.weebly.com/uploads/1/3/4/0/134017079/mizuwexeweru-remuzuzufokore-xufodujavobap-gosiworuguz.pdfIn PDF document text
    • http://ciccioinpentola.com/userfiles/files/pavozitamidokatosutegolu.pdfIn PDF document text
    • https://furedanoduribi.weebly.com/uploads/1/3/4/6/134681858/7040790.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/gojeke.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623c306540da6---ludoj.pdfIn PDF document text
    • https://rigafefabapamum.weebly.com/uploads/1/3/4/4/134486683/kinorogiposegi-vonavefu-femax-xawunojatoku.pdfIn PDF document text
    • https://mazerobuwi.weebly.com/uploads/1/3/1/3/131398334/modumexixawej.pdfIn PDF document text
    • https://tivakuwisol.weebly.com/uploads/1/3/4/3/134315960/1313171.pdfIn PDF document text
    • https://baluwona.weebly.com/uploads/1/3/4/6/134611665/00846818.pdfIn PDF document text
    • https://apotekatia.ba/fajlovi/xofojifolunimi.pdfIn PDF document text
    • https://dubinusuna.weebly.com/uploads/1/4/1/2/141249671/xudoketurasiforux.pdfIn PDF document text
    • https://livnica-metalurg.com/images/pages/file/51997230227.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2022-3-12/20220312011521491431.pdfIn PDF document text
    • https://roriwemako.weebly.com/uploads/1/3/4/5/134599113/nokozalab_losap.pdfIn PDF document text
    • http://www.littletreepreschool.com/admin/kcfinder/upload/files/5886633846.pdfIn PDF document text
    • https://pinonomobeberex.weebly.com/uploads/1/3/4/3/134318871/6797018.pdfIn PDF document text
    • http://www.karavanynera.cz/upload/files/13894407908.pdfIn PDF document text
    • http://www.toptehnik.si/images/nanotutalag.pdfIn PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/wumuradoruzisa-fipov-tiduserilib.pdfIn PDF document text
    • http://afgesproken.nl/kcfinder/upload/files/madadobevaxiluwugukowe.pdfIn PDF document text
    • http://prepearl.com/uploadsfile/jurinivuzekibijax.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_off0000c5c1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c5c1.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C1 17180 bytes
SHA-256: ea3bd5fc2c47d45fa616ec828a1345030ff0c5d59c8a857a5f0ae25518632edb
font_01_sfnt_off0000f2d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE8 10856 bytes
SHA-256: 7c5dae85ceb13c62ca12a70db89758e937d36a146d15430c1839d3b32dfb5782
font_03_sfnt_off000123c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123C0 16088 bytes
SHA-256: 450eea5fc67953cc3bdc764260aa6f1739571c17331c9588074966c3dbef4c6c