Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1a97c0d235f3fb…

MALICIOUS

PDF

83.3 KB Created: 2021-06-28 14:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1c712e57e9f6be27de461116547781b5 SHA-1: aad2d9c85da90a7b8aa3184cdac6376c28dea44b SHA-256: 0c1a97c0d235f3fb2bf0401e303de22970c5226351ac27c8e593d9504f1a3e7a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the nature of the heuristics strongly indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://garglob.ru/uplcv?utm_term=while+you+were+breeding PDF link annotation
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/b05e2676fe1017f5d713ad5b0deae4ce/pexodividitovol.pdfIn PDF document text
    • http://limuzine.md/userfiles/file/39451785264.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a52cce0e4d7---37072426723.pdfIn PDF document text
    • http://cyklo-sport-servis.cz/UserFiles/File/papekid.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd615a900b4---gezum.pdfIn PDF document text
    • https://avigailpekelman.com/sites/default/files/file/dolaziwevoguzuzibil.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6036d4a735---3892197182.pdfIn PDF document text
    • https://atkarisuli.hu/userfiles/file/webaxegibose.pdfIn PDF document text
    • http://waypl.pl/upload/File/77562385561.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/10166958367.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/fixixaxiwiwaz.pdfIn PDF document text
    • https://karinbentum.nl/uploads/file/90832692757.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/05m6o58ispj8c4c1j8acmn9dr1/63553671664.pdfIn PDF document text
    • https://salvamontbihor.ro/app/webroot/files/userfiles/files/narofeboluxunujiguditalag.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/f222789c04a822976ce91b1b5f87e72b/pevoli.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/16078cf0e14aa6---90638651151.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16083c55d86de3---zukabir.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608703e689206---27480678977.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b36fe3d987e---sapefo.pdfIn PDF document text
    • http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/repinenudolibagari.pdfIn PDF document text
    • http://wang023spa.com/userfiles/202106file/2021061410511970554.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096dd0d74121---5213032232.pdfIn PDF document text
    • http://smn69.com/clients/866038/File/wegedarezab.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/4d4rpt0d84bilvl3uh6nqnl0e7/puvobola.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_off0000e4df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fcf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF6 10532 bytes
SHA-256: 845f475d6d64fe546c5d6b197e29598fc48187d6535a2d0c25d14a2f521a78c4
font_02_sfnt_off000114a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114A0 16928 bytes
SHA-256: 8bb2c8b10fb467bc8b1bcb8b05f678216668e7a681e88444f1a097a6972e6e9f

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