Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ebd307fdcd26975…

MALICIOUS

PDF

89.0 KB Created: 2021-06-26 14:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 10bb028ec427b8491961dd9f51c07a8a SHA-1: 879c4cf0f1815169b68197df166d4be06e38c7e2 SHA-256: 7ebd307fdcd2697576e5756e672a50e29b20ed71001cb198df9a345fc2541d6e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The numerous PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics confirm the nature of the document as a collection of links to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://wastran.ru/uplcv?utm_term=obsession+with+yourself PDF link annotation
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/fb58478bf33f6b32e4ae5ff7337abb6d/46387111657.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/22344969456.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/b59678483c9d80b51335666f916be79a/96200773257.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/812949860a8e72aa4850.pdfIn PDF document text
    • http://allg-gyn.ch/userfiles/file/jepesi.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2aad2b286---25353550267.pdfIn PDF document text
    • https://limblength-sldf.com/userfiles/file/lorowatubakebokomelupibej.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/32498508a121ac675da07499ddbb089a/pimizukuzeputusuxale.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/f97e193fbef9a7e709d99f49b20a52a2/65178289173.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/f363e39vmk5d4isa2p631nnung/12906208660.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16094728e36ffd---sogetezizidezetuwedaju.pdfIn PDF document text
    • http://aquatrustfina.com/userfiles/file/96551730182.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/j71o3p68g1qndvji57pl039ad7/9135031568.pdfIn PDF document text
    • http://geoodwierty.pl/files/file/zabofexaramozulorunaxu.pdfIn PDF document text
    • http://unseenadventure.com/userfiles/file/21038257998.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071936571255---88813474821.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16081701ad6c7b---wizufajazonakiladituma.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a87ff8ad8bb---zebujigisoje.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/muvibipusekoxakugelubim.pdfIn PDF document text
    • http://minutemen-jrotc.com/clients/84940/File/85602156233.pdfIn PDF document text
    • http://dokumsuzgec.com/userfiles/files/sogapisilulijesabe.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe82c56eb4---61083005726.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d5e812a1e88---20187215532.pdfIn PDF document text
    • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210524083806.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_off0000f941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF941 17480 bytes
SHA-256: 056ed6eaa34098686f60099a7243b7f823117fcd5c5bf14f1aaf7d9596054259
font_01_sfnt_off00012683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12683 10612 bytes
SHA-256: 68a746791ee6b671969ea1f4fc030861114bbfcc6acadeeee4cb3362c9ff62eb
font_02_sfnt_off00013ed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ED1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1