Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fdf53914697d45c…

MALICIOUS

PDF

208.9 KB Created: 2021-06-26 21:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: dadd67431841256a62128aada4231e50 SHA-1: fcb4a8947af3f54abbcbb13973fd0f88e76dfd90 SHA-256: 0fdf53914697d45c84136709325b493c954b7943af9118d419580dc8ed1d5790
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by ClamAV as a phishing trojan. It contains multiple links pointing to compromised WordPress sites, specifically targeting file upload functionalities. One such link, http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0a265f96b---majojewejasazatutuk.pdf, is a strong indicator of a malicious download lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9815

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/cf95afeb91d17383fb9bed76e2de9202/13850545912.pdf In PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/t6jk688uop3j13rsvsvda7nt8i/vemuvufasep.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/logasitudexefasujubawixo.pdfIn PDF document text
    • https://www.ideaklinikankara.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080d7b69740c---filaja.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0a265f96b---majojewejasazatutuk.pdfIn PDF document text
    • http://agendaalzheimer.org/files/galeria/files/bajutotabawipafamiwezetil.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf58fe5e3a---5397344320.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c833a4196e---zumaxanasefezezat.pdfIn PDF document text
    • https://bachson.net/upload/file/daxuferudejabe.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/o9a59k35ni39bb7rnkssut2eq5/nikipuju.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/e283509598f2f7619c7e4bd75bee3ad1/xubujubapopagawijomal.pdfIn PDF document text
    • https://soechi.net/userfiles/file/18996377023.pdfIn PDF document text
    • http://mediaworld.pro/ckfinder/userfiles/files/50033468584.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082df34c5d0d---nusutibunal.pdfIn PDF document text
    • http://zionhillfirstbaptistchurch.com/clients/73368/File/nidosukopufiw.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/540c40e414df651ae80d96397d3f9c46/90769472153.pdfIn PDF document text
    • https://fultoys.com/userfiles/97875536517.pdfIn PDF document text
    • http://kimyasaldubeller.com/upload/ckfinder/files/gowijiwidupeluniro.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/nemizu.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082d53628565---ludimalesezuwirolozu.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/7oes6t99mfdc2s6sb802n7bbvf/1696925553.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/65821095b92a4a311bdb28e904141007/fagebakopiluviv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=fly+me+to+the+moon+bass+tabPDF 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_off0002d887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D887 10412 bytes
SHA-256: bd188f1198eb0d98917e0c154fcb7480b5d89d93007d6a2d4218a97578c6d0df
font_01_sfnt_off0002eff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFF7 17816 bytes
SHA-256: a54c140672553b04c85edb0de05465514e74998798cca20b29d8f44d0b0a07f7
font_02_sfnt_off00031e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E18 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1