Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bc6163baec37bc…

MALICIOUS

PDF

73.3 KB Created: 2021-09-04 09:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 33c382a540aecd376388efad39540c2c SHA-1: c4228a603671f6ee797223db5a017282a54b0b30 SHA-256: 72bc6163baec37bc95b967a3b0d8019a67b780f61d292e2cff1be873a4764956
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/e021faba68eccacb141f7003524fb73c/90743957378.pdf In PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610e60d836d28---35959954414.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aed88013eac---25269976453.pdfIn PDF document text
    • https://auto-rujo.com/images-editor/file/74925072138.pdfIn PDF document text
    • http://stroisvias.ru/userfiles/file/32190434682.pdfIn PDF document text
    • http://fullx.net/files/nujetemoz.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c68ed602712---61894518915.pdfIn PDF document text
    • http://qianshunqs.com/admin/upload/38588675381.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/sunegotusogevum.pdfIn PDF document text
    • https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/ca7bd17685d72bb9b4c4074837c1b790/jegolopalofos.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/wowadugurizi.pdfIn PDF document text
    • https://facades-metal.ch/ckfinder/userfiles/files/mekiwakutoboxixebas.pdfIn PDF document text
    • http://erdivigado.hu/userkepek/file/60250347800.pdfIn PDF document text
    • https://eric-parnes.com/ckfinder/userfiles/files/kejuvesoromodagamegizoxat.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/7qa4uhq2e9luhgb3f79in83sb5/gusilozamexiterulon.pdfIn PDF document text
    • https://silverlabpupsforsale.com/userfiles/files/sasiretupemaxoxujizamora.pdfIn PDF document text
    • https://wct.goldcrownresort.com/magazine_files/files/dirowaditunaxafubesi.pdfIn PDF document text
    • http://ilovechardonnayhills.com/userimages/tojiximavuvab.pdfIn PDF document text
    • http://sacoorhealth.pt/site/upload/file/mivej.pdfIn PDF document text
    • http://dolphinkorea.com/files/files/15872096905.pdfIn PDF document text
    • https://laurallo.com/ckfinder/userfiles/files/fumoz.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608f8e22a57ac---25403818954.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160c0f16c15bf1---sexux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=basic+algebra+formulas+pdf+downloadPDF 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_off0000bd59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD59 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD570 11244 bytes
SHA-256: 9327b8ceb133fd9d2ba636a7bec742e16e6d0afe2b3975371f47b18954469853
font_02_sfnt_off0000ef70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF70 15724 bytes
SHA-256: bfa34644abc53fbc1f8993559c3e00ea8ed64b91f2849cf2350cc76622aca84f