Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d8b15a81292f1a…

MALICIOUS

PDF

272.0 KB Created: 2022-01-15 09:51:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 1e2656fa2a4794e6422bac614e6c5b8e SHA-1: 3f567c5122d1289896f16ac6164a5addc75da531 SHA-256: c5d8b15a81292f1afb2a7f454bf6cb0eb61099e4aab3307bdb65b36df8ef325f
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7982

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://playos.net/data/playos.net/uploadfiles/file/suzetupodepelarakesid.pdf In PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/2fb59ef6543e53535cd8aa948d08b374/bufulaman.pdfIn PDF document text
    • http://travelsolutions.co/ckeditor/kcfinder/upload/files/fufinovufitakuxeligudato.pdfIn PDF document text
    • http://pass38.com/images/contentimages/files/liwotozubimamawifoboten.pdfIn PDF document text
    • http://tayles.com/uploaded/66142256818.pdfIn PDF document text
    • https://emtracing.net/userfiles/file/joxanuxuzagebesobewusa.pdfIn PDF document text
    • http://www.startbatteries.gr/ckeditor/ckfinder/userfiles/files/3050383014.pdfIn PDF document text
    • http://vasset.bg/userfiles/file/55807924570.pdfIn PDF document text
    • http://www.workbythai.com/admin/assets/images/fenilabonubiduni.pdfIn PDF document text
    • https://www.benkorner.nl/admin/library/ckfinder/userfiles/files/fowenafilijawozaxu.pdfIn PDF document text
    • https://dobski.pl/userfiles/file/degokasapomavije.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/16d85a75b11d0899bc06fd259b26e96d/fukojiwa.pdfIn PDF document text
    • http://mwflower.com/upimagesfile///22712738161.pdfIn PDF document text
    • http://diegogenna.it/userfiles/files/24291052810.pdfIn PDF document text
    • https://detectagsafety.com/ckfinder/userfiles/files/70561401970.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161707a68168be---89591465286.pdfIn PDF document text
    • http://spadhotel.com/basefile/spadhotelcom/files/78269332929.pdfIn PDF document text
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/64706669205.pdfIn PDF document text
    • https://sonntag-immobilien.lu/userfiles/files/gekutinalilawixafebanivu.pdfIn PDF document text
    • https://iskoruma.com/upload/ckfinder/files/mozemuderepelunozedev.pdfIn PDF document text
    • http://pusat.wellcomm.co.id/assets/kcfinder/upload/files/pulakituxorapixirif.pdfIn PDF document text
    • https://aademvegabaja.org/images/image/difomamowororidazolirin.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/5bhJmFgkeCE/uplcv?utm_term=immunization+record+form+californiaPDF 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_off0003d121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D121 18400 bytes
SHA-256: 965393f5ad90829640213e718843442d7d316db591636c40a767b50cb9c947f4
font_01_sfnt_off000401a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x401A7 10580 bytes
SHA-256: 7467a132915e016456d82269a28c06432ec3d1f8ab00e32489e2cd8246dd05f1
font_02_sfnt_off000419c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x419C6 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336