Malicious PDF — malware analysis report

Static analysis result for SHA-256 191c21a44bb73f37…

MALICIOUS

PDF

76.9 KB Created: 2022-04-08 20:33:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 9f3d8046060e7ee5845b110664cfc515 SHA-1: 2cbc9baa8c67ef85655781d989dd2ea5f339e5b8 SHA-256: 191c21a44bb73f373f38af7b2ace8bb192d7755e1208595d156abbb6193717d1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://yubit.co.za/YmrXLWy8?keyword=how%20to%20draw%20mountains%20with%20soft%20pastels PDF link annotation
    • https://watogovujun.weebly.com/uploads/1/3/4/6/134626060/5266356.pdfIn PDF document text
    • https://garixapevawena.weebly.com/uploads/1/3/4/4/134495328/712299.pdfIn PDF document text
    • https://pexagujunivati.weebly.com/uploads/1/3/4/6/134684520/merogogix.pdfIn PDF document text
    • https://xuminewas.weebly.com/uploads/1/3/7/5/137500686/ee39a08841cf9f5.pdfIn PDF document text
    • https://maxawoxemun.weebly.com/uploads/1/3/4/6/134615094/31d689f155e.pdfIn PDF document text
    • https://rirudelibuwa.weebly.com/uploads/1/3/1/6/131606594/fotimivek.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16203882bb40d3---78544657731.pdfIn PDF document text
    • https://mexakogu.weebly.com/uploads/1/3/5/9/135981712/wenusonitaju.pdfIn PDF document text
    • https://nalebetiraj.weebly.com/uploads/1/3/4/6/134669494/7916231.pdfIn PDF document text
    • https://jonolepazom.weebly.com/uploads/1/3/4/5/134520471/gexesajozutig.pdfIn PDF document text
    • https://zunutupere.weebly.com/uploads/1/3/1/4/131453944/8461643.pdfIn PDF document text
    • https://mijekuwovosi.weebly.com/uploads/1/3/4/3/134321571/lisemetagubusaj.pdfIn PDF document text
    • https://www.iccct21.scrs.in/kcfinder/upload/files/nosega.pdfIn PDF document text
    • http://studiotecnicodambra.eu/userfiles/files/dajabiluwuriguso.pdfIn PDF document text
    • https://bunoworerut.weebly.com/uploads/1/3/1/4/131438217/7518112.pdfIn PDF document text
    • https://figagukedeliv.weebly.com/uploads/1/3/4/0/134040575/dodezavesumupu.pdfIn PDF document text
    • https://bapadiwifujeki.weebly.com/uploads/1/3/4/0/134041393/7322290.pdfIn PDF document text
    • https://tovalowu.weebly.com/uploads/1/3/4/3/134375552/4641565.pdfIn PDF document text
    • https://sonikimejikelo.weebly.com/uploads/1/3/2/6/132681145/3570490.pdfIn PDF document text
    • https://movojedafep.weebly.com/uploads/1/3/0/8/130814843/voboleminurow-kabik-meviwozub.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_off0000c792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC792 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dfa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA9 10940 bytes
SHA-256: 3207a117463002e7e235ae71df8d912683c831b36def8a64e2bb2783ea5c6c1c
font_02_sfnt_off0000f8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C9 16296 bytes
SHA-256: a73e173c58574a7f79465de9fede839badc121b39e172608acb72e3a4fbfd963

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