Malicious PDF — malware analysis report

Static analysis result for SHA-256 425a104586050e50…

MALICIOUS

PDF

88.3 KB Created: 2021-07-22 23:55:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 16a721d6bc808b5867719acd898eeb45 SHA-1: a7460c040a234d5ff4d32f780a630e9f1bd368d4 SHA-256: 425a104586050e50855b5b71c70b20b57a86cea2598f4c1741e39b41d890b9ab
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f45e351892---semivowobanujepiriwewa.pdf In PDF document text
    • https://e-fasteners.eu/media/file/54990416089.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/luxanovejuvapegiz.pdfIn PDF document text
    • http://cropscipublisher.com/files/upfiles/file/xagemamawufovakizum.pdfIn PDF document text
    • http://huile-de-nigelle.info/userfiles/file/kumurejabumujimof.pdfIn PDF document text
    • http://lt101shop.com/userfiles/files/8155315501.pdfIn PDF document text
    • https://hainutedecopii.eu/ckfinder/userfiles/files/23499325333.pdfIn PDF document text
    • http://www.motionmantra.com/userfiles/files/dilevaburi.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/6gtnp3rgk8pg3q57fsaic8q4gd/losepu.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/vgfhv9ep2hbfshfnrp7lgoh5vl/vebibasubekodibizobe.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1609885747f9bb---27831731066.pdfIn PDF document text
    • https://ecoverservice.be/gallery/file/kusor.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/6a6e75fb0b7ddd64fc1537c10c3acee5/88822176496.pdfIn PDF document text
    • http://ilovehikari.com/uploads/files/gewisederazamowen.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/22670418439.pdfIn PDF document text
    • https://oddluzanie.net/userfiles/file/83576295908.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bad6bb6a3e7---17880017767.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc0e477e936---26945934520.pdfIn PDF document text
    • https://ville-saintleonard.fr/pdf/tobuk.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/ck2fb1latjdadmqioe7aeortm0/dusaku.pdfIn PDF document text
    • http://majortaylorride.info/images/uploaded/file/detakixobumos.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607a9e1b68f90---subawul.pdfIn PDF document text
    • http://mulroyenvironmental.ie/userfiles/file/780952366.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16092960cd40b1---nisir.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=several+in+englishPDF 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_off0000f44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44E 18820 bytes
SHA-256: 253ea7a70223481a9770c5110dd12a40cea4ccfa3c8af62aa0f01ecc7bf3ff02
font_01_sfnt_off00012423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12423 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C3A 10308 bytes
SHA-256: 4387a11c28409a9ba9efc517a145184278d447790e11293fd10e9668530ccdb6