Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a27e5bd1ad3a86f…

MALICIOUS

PDF

91.8 KB Created: 2021-07-02 08:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: cc9e108f87375902fd1adb585a18a6fc SHA-1: 64d164218a54545aae5a9f103a3dacfd9260ebba SHA-256: 6a27e5bd1ad3a86f57a3f3d0e965eed5c8b40cf4e7bc5887865d12f3c3d03177
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress uploads and disposable hosting domains. The primary purpose appears to be directing users to potentially malicious content or phishing sites, consistent with a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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 http://eventcompany.org/clients/e/e3/e30ef11cf4efe639fe6592aa37b9cb94/File/8503650999.pdf In PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/e52ef4d4790acdab91572639f9bb588f/jarapademuredolo.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c8e0207859---dozes.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b73ccc15cd1---49863570819.pdfIn PDF document text
    • https://jxloanchien.com/style/postimage/file/22740363022.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/96926013092.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608196f2f21ba---misegatimunugitigitowuva.pdfIn PDF document text
    • https://moveo-sport.pl/userfiles/file/2992283292.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/ujdkb8ee7356vc9dbr1shadu1c/pojibuwoxupiziz.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/339dea00a56f6c66f1756e6ef91fab48/zibedozu.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/tedikoda.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160cfdc6aeef7b---xilitemidazatimesid.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16087573ab79df---vakalurijipuv.pdfIn PDF document text
    • http://morebricks.com/ckfinder/userfiles/files/gofapokuwugoded.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607001f9f26d7---4210811465.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad657f0930---14938607648.pdfIn PDF document text
    • http://pierrevillers.fr/mairie_files/file/69756506486.pdfIn PDF document text
    • https://atamergranit.com/userfiles/file/95533363179.pdfIn PDF document text
    • https://hinodanang.com/uploads/image/files/17073394444.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c484396a553---razedegodudutunuzunaxak.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c3f5c6985---rikitibonogamesuni.pdfIn PDF document text
    • http://18554080.com/userfiles/file/99430449603.pdfIn PDF document text
    • http://phamtrangia.com/upload/files/zovovewufuz.pdfIn PDF document text
    • http://lube-stc.com/ckfinder/userfiles/files/burezetemesuxum.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984e0cad747---59122079643.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=that%27s+funnier+than+sayingsPDF link annotation
    • 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_off0001043c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1043C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C4E 17768 bytes
SHA-256: bad7378339002fd67d451c6f8746010f4473ecd2ce0a212890ac292c4b814479
font_02_sfnt_off00014b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B31 10540 bytes
SHA-256: 3a74baa30b4a072a9243f76be5ccbb329d5c8f6f1bd3cf38f6204089d600790a