Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eadb5bc268b6a3a…

MALICIOUS

PDF

84.8 KB Created: 2021-08-02 13:24:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 83f3e773df6c937d3436c4c746faa717 SHA-1: 962ff39741f61823d24ea4c2da1200c04628e46c SHA-256: 2eadb5bc268b6a3a7859920377be4203bc6e3d528315deaf819b7a3c23a4a3a2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farm heuristics indicates an attempt to direct users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://cructi.ru/uplcv?utm_term=marriage+biodata+format+pdf+free+download PDF link annotation
    • http://wawa757.com/uploads/files/17258727921.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/b2e501e8b6ea706d5ea2fe6829c17141/91486824394.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/8e92b99c0dd46038f6088a53f10d723b/24965287650.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/svrlog4tmc1a6paeser0t37f9a/dozaxuzazisowodure.pdfIn PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/jasusogofemipixubogef.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609103d5088a5---84576877612.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/budufebuz.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/jawulogewijisatezedobev.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080b251bf591---56116211362.pdfIn PDF document text
    • http://backyardreleaf.ca/clients/6/6a/6a4eaaf8452764cb6fc14c9064ed0c71/File/sezizoro.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/0ele6udkn8n6bv3l0co0hqrb4l/bijurevenenud.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/b8f0fab350fdc7dd2ef1390d43d892a9/92200833398.pdfIn PDF document text
    • http://onfireinteriors.com/userfiles/bawijuko.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac2ae394455---lutetupeludego.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/lurupuzegepasejafo.pdfIn PDF document text
    • https://peterdegendt.be/file/51197229028.pdfIn PDF document text
    • http://rustproofingottawa.com/userfiles/file/61199754086.pdfIn PDF document text
    • https://empresa-venta.hr/files/vitojupidofupakukumigu.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/13ed568f9562d952d0553b9c70f0315b/94582778384.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608c8df363464---6972267591.pdfIn PDF document text
    • http://wallawallahighschool1968.org/clients/75819/File/wiminul.pdfIn PDF document text
    • https://akvaguru.hu/user/file/19467779811.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16075cba8c1cad---rebategowafe.pdfIn PDF document text
    • http://tandartsindex.nl/images/uploads/lodivituzepuzinesavonop.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_off0000e793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE793 16992 bytes
SHA-256: 5660e3e916e8ba838fc56b38c6522978f872762158a172ee1106d6edde540759
font_01_sfnt_off000113f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113F3 10892 bytes
SHA-256: 44f2c4c0da41a373ca139d741bf9afa0a833975452add8bf9ed49a22ffa3ccaa
font_02_sfnt_off00012cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CBD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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