Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db94ce8abf44ea…

MALICIOUS

PDF

86.3 KB Created: 2021-08-21 19:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 71e7c1de19bee73df88de4af95e296a7 SHA-1: b53377178b8e04e33b531c12e6b96f9eaf020fa0 SHA-256: c5db94ce8abf44ea64d26840084ade95629f26e7e518a402cdc8af4bc2e6c9d7
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/1de802661fb66d164e8825387339c8d2/kopukoxopopibimik.pdf In PDF document text
    • http://yejida.com/userfiles/file/memir.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/643ff7357b797a0addda10b9865cece3/pinejize.pdfIn PDF document text
    • https://0900107678.com/upload/file/zidazutojonajipimosawi.pdfIn PDF document text
    • http://www.amedna.com/userfiles/files/rolite.pdfIn PDF document text
    • https://thingstodobahrain.net/ckfinder/userfiles/files/23498714814.pdfIn PDF document text
    • http://smartraoptics.com/fck_filemanager_upload/file/xixib.pdfIn PDF document text
    • https://cleartunemonitors.com/ckfinder/userfiles/files/riralowafolerakaboli.pdfIn PDF document text
    • http://mintaialuminum.com/d/files/87281740719.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/84329416095.pdfIn PDF document text
    • https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/71873746898.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c59ad6d7099---25491969167.pdfIn PDF document text
    • http://74ahs.com/clients/2/2a/2a132ee8da0778863662fd4b1fa251ed/File/dogizofewatof.pdfIn PDF document text
    • http://jamessham.com/admin/usercontent/file/matonudupajejegata.pdfIn PDF document text
    • http://cavusofis.com/images_upload/files/zalugatosezinupa.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a663087c5---gutudipusorisirafibux.pdfIn PDF document text
    • http://sartor.ru/upload/files/zelakajabujadijelur.pdfIn PDF document text
    • https://eyetracking.pl/userfiles/file/41870237275.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160733e629704b---17336659463.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/fbn82einac3l7tn5ghsgjh9ufd/9542402149.pdfIn PDF document text
    • http://svsteinfurth.de/radsportfiles/file/kesanijasebewu.pdfIn PDF document text
    • https://kingdomofgodmn.org/userfiles/files/43557177553.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608127683b141---kugefuniwezopulosalawe.pdfIn PDF document text
    • http://bharatdarshan.net/rgroup/ckfinder/userfiles/files/badilakaluvubiperaret.pdfIn PDF document text
    • http://eau-msu.ru/ckfinder/userfiles/files/13050488246.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=how+to+do+a+velocity+vs+time+graphPDF 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_off0000eb1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1C 11116 bytes
SHA-256: f5d49d7037ec2a780748d7435adc05a3a2f0a041a73c8c69c96f8880b8110b29
font_01_sfnt_off000104d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D3 17516 bytes
SHA-256: 0720d1505f78a77412d4397c23f4fd92f92061dcf7c3bc688d5b512277a36c07
font_02_sfnt_off0001322f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1322F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1