Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d81760434e66e7e…

MALICIOUS

PDF

89.4 KB Created: 2021-08-10 20:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 13031c1b6260536c64c3adee4915e47e SHA-1: 22a916cda9726c8628fabc3d893add0a1c20a25e SHA-256: 5d81760434e66e7ee6dc14c8efe2c5f18fc0b275bbecb6aec916658a63edc7a6
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=word+blitz+hack+android PDF link annotation
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/b3qgftlol2inokq1c9navorro2/28157731696.pdfIn PDF document text
    • http://chickenwild.com/upload/contents/images/images/mimapamijobizikidobagutis.pdfIn PDF document text
    • http://sys-svinding.dk/userfiles/file/16803660011.pdfIn PDF document text
    • https://dynasty888.com/image/files/20210804_005837.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/8pkcg2ot7b0p0rpbj422vfokq7/nuwumerodurukenijide.pdfIn PDF document text
    • http://burchiellati.com/file_fck/file/10536739799.pdfIn PDF document text
    • http://pelesiuvalymas.lt/i/File/gabameb.pdfIn PDF document text
    • http://entiambalaj.com/upload/file/xalasilokofukinof.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/fn8pl12c048taf5ptpungb4c80/46855269827.pdfIn PDF document text
    • https://psfund.org/public/uploads/files/cms_files/97636190792.pdfIn PDF document text
    • https://masukpt2.com/contents//files/siziguno.pdfIn PDF document text
    • http://scottsdalehighbeavers1978.com/clients/80197/File/futimubebivojukiki.pdfIn PDF document text
    • http://ruben.pl/ckfinder/userfiles/files/liwupatow.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd908edca73---xomubalajokinefa.pdfIn PDF document text
    • https://manenshop.com/upload/files/fudebetixe.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/gemudezezobolomofegit.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/43e1d91d1c2390f5378e45c10668eaaa/11466982310.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160cac5696014e---wawuvolo.pdfIn PDF document text
    • http://fsanaq.com/upload/file/210624183333468752zndauhi3ngdx.pdfIn PDF document text
    • http://bwc.lt/i/98090280109.pdfIn PDF document text
    • https://adikkedua.com/contents//files/zerume.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/160904598e9005---robafasimupovasutemo.pdfIn PDF document text
    • https://safrano.pl/userfiles/file/jofeladen.pdfIn PDF document text
    • https://mediaget.com/userfiles/files/25117421878.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000108ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108EA 17692 bytes
SHA-256: aff1be4a01f40fc3323a6809eeec932a4746b75c2b1c4fda15182b72cc46d598
font_02_sfnt_off000137b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137B3 10452 bytes
SHA-256: 8601ff68dec93dbe0c25c890d9ab625bb48595a662a42f1cc48a99340b88d2f2
font_03_sfnt_off00014f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F53 1692 bytes
SHA-256: 6df00093d1a1fd8b8f95901b42ba2863538c90606311dd4adf1993a433792d13