Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d81a340f5f42c03…

MALICIOUS

PDF

68.9 KB Created: 2021-09-30 10:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: be950f545312de63a8382e5bf6ff6d7f SHA-1: c56d6aee6caf7366203e5c96d17f44746ee95a02 SHA-256: 5d81a340f5f42c0382eeefd92709609fde928b97a5eb536aef66d323a40512a3
146 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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://chcial.ru/uplcv?utm_term=how+to+make+a+facetime+call+on+android PDF link annotation
    • https://fitness-base.tw/uploads/files/202109250051121929.pdfIn PDF document text
    • https://guadix.co/ckfinder/userfiles/files/38168300321.pdfIn PDF document text
    • http://soldearenales.com/galeria/files/49649319015.pdfIn PDF document text
    • https://nestsearch.in/admin/uploads/file/xeditobuzadobumis.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7226ca5b1---delapadafurefuvalebamuf.pdfIn PDF document text
    • https://edubox.mn/uploads/users/0/files/wirufokonelejub.pdfIn PDF document text
    • http://iltorg.ru/upload/file/88175902767.pdfIn PDF document text
    • http://zamgph.com/FCKeditor/editor/filemanager/connectors/php/uploads/file/121343448452.pdfIn PDF document text
    • https://dynasty888.com/image/files/20210915_170156.pdfIn PDF document text
    • https://adikkedua.com/contents/files/nexokakenalumesetevu.pdfIn PDF document text
    • http://fluitec.fr/ressource/site-image/files/17624862879.pdfIn PDF document text
    • http://logiccpacma.com/ckfinder/userfiles/files/lirukosobi.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021091119551882.pdfIn PDF document text
    • https://my-natural-style.net/upload/files/14340573003.pdfIn PDF document text
    • https://reparation-mobile.net/userfiles/file/vawefabovapuk.pdfIn PDF document text
    • https://fceresources.com/ckfinder/userfiles/files/39368341051.pdfIn PDF document text
    • http://live-net.it/file/73602309837.pdfIn PDF document text
    • https://landtop.com/filespath/files/20210910002108.pdfIn PDF document text
    • http://porpora.biz/imagenes/imagenes_contenidos///50396918540.pdfIn PDF document text
    • http://blbr365.com/userfiles/file/1632266817.pdfIn PDF document text
    • http://naplesredeals.com/userfiles/files/rovopapowaxego.pdfIn PDF document text
    • https://quatden.vn/webroot/img/files/84182635629.pdfIn PDF document text
    • http://cableesmaltado.com/d/files/95955485886.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 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_off0000adb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADB0 16088 bytes
SHA-256: 05ba59ac4f4ca1c73e843e0fa4b73c7f109daa04b4cc2da0b59b7aeddbc46226
font_01_sfnt_off0000d619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD619 10636 bytes
SHA-256: 61fe6928209b287b8f2a285b2caae4413924780c1cf7acb19f6f684a624272b5
font_02_sfnt_off0000ee64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE64 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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