Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b517b6e037727d…

MALICIOUS

PDF

78.1 KB Created: 2021-08-11 04:29:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 0e3f3513e4dfac8cf725aa8ac622fb6b SHA-1: 0b7f7f0f7ba39e50fe5ca5c572df0c0e0ec0ced5 SHA-256: 72b517b6e037727d7aa95b39a926d36a80813cceb7c59e08574e1ab12bd32ac5
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://infrive.ru/uplcv?utm_term=exercice+maths+cm1+droite+parall%C3%A8le+et+perpendiculaire PDF link annotation
    • http://www.miyadenthai.com/image/upload/File/95741348413.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd52b89d628---69182115883.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/1ur6kmbae31p0je4nu3jrq85e6/dukevuz.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/41d8ef7f52cc2803bad8967fa3d1b7d7/petewitifonaba.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0d86d41e24---60098833573.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/tfuqndr3aourvslu9vd58p79ts/57903714542.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/ce040568421b33c11da928935f8e0500/minufixuji.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210715171204921.pdfIn PDF document text
    • https://aradmissions.com/ci/userfiles/files/sujox.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/1c55c9cae6fb3425137885342e24c34c/mudekubovomumexugox.pdfIn PDF document text
    • http://gerd-pollak.de/userfiles/file/niwizesukijijamedatelapi.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/16147798656.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607897be4b441---mosidebawawojamopis.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/da845e1b9b87dcc9cfb726591580257b/37195072303.pdfIn PDF document text
    • http://bean2beenefamilytree.com/clients/60578/File/22462881964.pdfIn PDF document text
    • http://sysquare.com/UserFiles/files/59172508504.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16071c90d16e94---wobukuvixoxakazidima.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/304b75bca0f52df932e5615a6b7a3467/29804103878.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b1932a588---2698549471.pdfIn PDF document text
    • https://salvatoredivilio.it/userfiles/file/45892185654.pdfIn PDF document text
    • http://train-in-japan.com/images/blog//file/mukaxidepuxobuduwizit.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_off0000c885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC885 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE097 17800 bytes
SHA-256: 7091d21e853c938973d9a4d35ed1bc84c19efe7feb5ff531545f53d62ef10ba9
font_02_sfnt_off00010d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D70 11172 bytes
SHA-256: 5f03fb7749d5bd07a79265166fe4b07c557896634dfe4db8eb334ea750f9f38b