Malicious PDF — malware analysis report

Static analysis result for SHA-256 98ffbdc2d8c35a3f…

MALICIOUS

PDF

76.3 KB Created: 2021-12-28 06:59:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-08
MD5: 25695fa924d97fdac0853ad58c4dcd3f SHA-1: 758d85ab1c6ee66a689b2f4a28e2e6edd6612e8d SHA-256: 98ffbdc2d8c35a3fa92fc1c88c28cf05b243d70c515c986962de8a50612cc1dd
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://drafthe.ru/uplcv?utm_term=lannick+group+timesheet PDF link annotation
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/pf05incuifhlk4d367bvbb7gu4/gulupixejapibos.pdfIn PDF document text
    • http://dxline.eu/userfiles/file/28466268029.pdfIn PDF document text
    • https://costabravas.com/uploads/localidades/files/vepusivazejejimoteziris.pdfIn PDF document text
    • http://kleinschadenexperte.de/userfiles/file/lijinalapipidoxo.pdfIn PDF document text
    • http://smileorganic.net/smileorgfarm/filesupload/File/71124947725.pdfIn PDF document text
    • https://infrastone.com/userfiles/files/21140217697.pdfIn PDF document text
    • https://durgabas.coop.np/ckfinder/userfiles/files/luvonawiwunelukorex.pdfIn PDF document text
    • https://cengilli.com/icerik_images/file/51472790151.pdfIn PDF document text
    • http://ylgems.com/file_media/file_image/file/gegaziketutad.pdfIn PDF document text
    • http://saltokisport.com/uploads/files/gonavabakikalakesiwokotek.pdfIn PDF document text
    • https://globalathena.com/ckfinder/userfiles/files/fupafewu.pdfIn PDF document text
    • http://sladkiy-ostrov.ru/userfiles/files/kapinigivumoru.pdfIn PDF document text
    • https://wasael.com/userfiles/file/vajogefegero.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/161a6e419a32a6---gudasenititusemorerena.pdfIn PDF document text
    • http://odnoklassniki-files.ru/images/uploads/files/35783379161.pdfIn PDF document text
    • https://aayams.com/userfiles/file/23462440590.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161590d702c1a3---setinekax.pdfIn PDF document text
    • http://westpakusa.com/phpsites/vertical_living/uploads/file/ranosodovinaxawajemaw.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/65737eb21e9f1c1d1a0b8630bf92600f/kesimodosabupowijumo.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/favox.pdfIn PDF document text
    • https://bunyaminerdemir.com/resimler/files/nawexo.pdfIn PDF document text
    • http://novotulka.ru/upload/files/gudumuxonofoxezaxene.pdfIn PDF document text
    • http://www.jobsincrete.gr/images/_user_na/file/91012667546.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c2099f8545f---jijitugoluziweravutevesap.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/161c937f859dd8---taxebijujepusu.pdfIn PDF document text
    • https://fima.gov.bd/public/files/assets/ckeditor/kcfinder/upload/files/89434844473.pdfIn PDF document text
    • 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 extracted file (font_00_sfnt_off0000c4e7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c4e7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E7 18068 bytes
SHA-256: f9433d30102eb62f9f944901ff36e31a0a3da1d2a85cb1d852c7285adf9f1918
font_01_sfnt_off0000f453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF453 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00010af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF7 10924 bytes
SHA-256: 02b027c9b6e6ac24c28524509933de7ce8b6d3dc2afb588ad0d2bc0a4a448267