Malicious PDF — malware analysis report

Static analysis result for SHA-256 191248af754e3ba0…

MALICIOUS

PDF

78.7 KB Created: 2022-04-08 23:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 81bcbc7f5017bb339f0c4b3ad270a5f8 SHA-1: 4202776b519b55125f4110fc591a6f97cb432f2c SHA-256: 191248af754e3ba0740d25f419f2130eec2372d29b2bba03dcdf47d4548edac1
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lazav.co.za/YmrXLWy8?keyword=how%20to%20study%20for%20the%20nha%20exam PDF link annotation
    • https://ruwusugotalub.weebly.com/uploads/1/3/4/6/134690364/906a92cead0a.pdfIn PDF document text
    • http://etre-belle.su/images/file/febukokiko.pdfIn PDF document text
    • https://losiweso.weebly.com/uploads/1/3/1/3/131380476/wolosesefisa-livasesirug.pdfIn PDF document text
    • https://texunufoxij.weebly.com/uploads/1/4/1/3/141352698/bixapi.pdfIn PDF document text
    • https://venubitolaxi.weebly.com/uploads/1/3/4/3/134372432/30949b.pdfIn PDF document text
    • https://rebeccaosborne.com/uploads/41413462848.pdfIn PDF document text
    • https://bifixebuwo.weebly.com/uploads/1/3/0/7/130776276/jupirofoluvusobolal.pdfIn PDF document text
    • https://lewotivegil.weebly.com/uploads/1/3/4/3/134320996/8312271.pdfIn PDF document text
    • https://dedaxasufebix.weebly.com/uploads/1/3/0/7/130775271/sozosexip.pdfIn PDF document text
    • https://toralalog.weebly.com/uploads/1/3/1/4/131436966/3b74ff.pdfIn PDF document text
    • http://n-production.com/upload/fckeditor/file/90937781742.pdfIn PDF document text
    • http://se-ty.com/uploads/userfiles/file/duvovapitixomibaxilar.pdfIn PDF document text
    • http://hmsendo.pl/uploads/editor/file/36581148294.pdfIn PDF document text
    • https://muwamobole.weebly.com/uploads/1/3/4/3/134356931/dekaladozasure.pdfIn PDF document text
    • https://zevakevo.weebly.com/uploads/1/3/5/4/135400716/8011533.pdfIn PDF document text
    • https://podzamcze-dobczyce.pl/admin/kcfinder/upload/files/83260975153.pdfIn PDF document text
    • https://kojotevasad.weebly.com/uploads/1/4/1/2/141220694/wujirat.pdfIn PDF document text
    • https://juvifopabolosat.weebly.com/uploads/1/3/5/3/135313118/xemoj_waneborusasi_kuborufofixokad.pdfIn PDF document text
    • https://mujaxelixoduren.weebly.com/uploads/1/3/3/9/133997177/kefabi.pdfIn PDF document text
    • https://kattliv.com/kattliv/admin/userfiles/file/melesipafenapumuvisuv.pdfIn PDF document text
    • https://pupupobinizoto.weebly.com/uploads/1/3/1/3/131384436/c66b2176.pdfIn PDF document text
    • https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/3109209.pdfIn PDF document text
    • http://harmonie-avion.fr/actualite/files/kenovom.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_off0000cf87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF87 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE799 17040 bytes
SHA-256: 7621fe27658988d50cdc7bd845dd0110f8a477357cbae7a89ceb08a5cc98cf87
font_02_sfnt_off000113c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113C2 10876 bytes
SHA-256: 08a0dd6c9ca3170b2ea3efb8f1fd25f69cb8601e1a5efbd88637eb14da870700

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