Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8c06f8c3a012a5…

MALICIOUS

PDF

133.8 KB Created: 2021-12-04 12:59:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 670bc0e9f9753c1c83c0fc8391f63ab5 SHA-1: cd935e6a9cb3657fd61547f4a011ecc797971f4e SHA-256: 5d8c06f8c3a012a5af9d3de39f52262ef35feac3c4736a0b04ad0fd2349772e6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9678

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://www.psoealora.es/ckfinder/userfiles/files/veremuva.pdf In PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/15f25dd967392cd636a4c18711b0a9bf/43472520394.pdfIn PDF document text
    • http://bburago.info/admin/fckeditor/userfiles/file/rudusasasosij.pdfIn PDF document text
    • https://serrechevalier-skifun.com/imagesfile/20864340479.pdfIn PDF document text
    • http://retailpark.bg/uploads/wysiwyg/files/xafavekikuvalug.pdfIn PDF document text
    • http://rococosofa.com/files/files/79304851346.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16174a481adc80---duxatatak.pdfIn PDF document text
    • http://kagoshimakojintaxi.com/userfiles/file/41909093550.pdfIn PDF document text
    • http://mientrungland.net/uploads/image/files/78568173255.pdfIn PDF document text
    • http://tylincms.com/userfiles/files/nunojijoxi.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/jeduw.pdfIn PDF document text
    • http://factorycontrolprojects.com/userfiles/file/55669517070.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/4k5kmdqkl43ato1i6sb65p9sm2/livamowo.pdfIn PDF document text
    • https://tungafilm.com/dorceiys/ckfinder/userfiles/files/rizinum.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1613076e6893e2---zurer.pdfIn PDF document text
    • http://artdental.hu/editor_up/dotubexesuvadenawuvep.pdfIn PDF document text
    • http://studiotecnicoarduini.eu/userfiles/files/diditubotufenese.pdfIn PDF document text
    • http://xzass.org/ckfinder/userfiles/files/46851179299.pdfIn PDF document text
    • http://idealhca.com/admin/images/file/27413620476.pdfIn PDF document text
    • http://goodlack.cz/userfiles/file/wowusiguge.pdfIn PDF document text
    • http://www.companyforte.com/imagenes/editor/file/72797014886.pdfIn PDF document text
    • https://glbtrader.com/userfiles/file/zadovirejaxaz.pdfIn PDF document text
    • http://kdekdyjak.cz/data/tigobenakesu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/HTGXzuRVGb4/uplcv?utm_term=acrylamide%2Fsodium+acryloyldimethyltaurate+copolymer+msdsPDF 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_off0001aa9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA9C 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0001c140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C140 10904 bytes
SHA-256: 2008da5cf6dbc323195b3447a3da957590417ef2d02eee47cd00732e86a132fc
font_02_sfnt_off0001da9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA9A 17320 bytes
SHA-256: decf0dd3848ab09620cd3fc953e67fd5481dd38efdfbf8398cb8aa71e48fd87f