Malicious PDF — malware analysis report

Static analysis result for SHA-256 af23aace16023496…

MALICIOUS

PDF

71.2 KB Created: 2021-08-20 06:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: fb3592785060ec977acd492afefd0f69 SHA-1: 110b616ed03443b01d8b6bda2575f4bc0491eb73 SHA-256: af23aace1602349607fffe0a9b00f61e3b652359e11a3ba30723908009410074
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pixomot.ru/uplcv?utm_term=7+generation+family+tree+template+pdf PDF link annotation
    • http://dental-forum.ru/userfiles/file/65113292572.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b23684859cf---tuxanozusomegog.pdfIn PDF document text
    • http://hk-sai.com/ckfinder/userfiles/files/pobekejumimefegopusiben.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a405c5e18---fipufusaxezuzopawogonud.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/1e938ce44725888c8d6b6e608258cddc/xujipo.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100b89adc024---65116220972.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/msj2jh402rdqvube3ejhbif331/pufixasorikepenuzedevoro.pdfIn PDF document text
    • https://baoyi-chuck.com/ckfinder/userfiles/files/paremamedevilezosuja.pdfIn PDF document text
    • http://shopsuathientu.com/uploads/userfiles/file/gigepatejituxexez.pdfIn PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/c41457fb064d4c644495750f547b9951/rudelusotekitinafizudos.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1609b680aebea1---47892122651.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/1k9uge7ica9tllj16939bqchmu/56649743366.pdfIn PDF document text
    • http://hotelgiottotorino.com/userfiles/files/13901792019.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609de8b9a81a8---88630409404.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160770eee72db9---18535143485.pdfIn PDF document text
    • http://gmkms.net/upfile_editor/2021/files/pujixipurafofugajo.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/7cc707f70ca4f3306dc2734f76d899cf/46102579947.pdfIn PDF document text
    • http://bociany.sk/media/file/25863319267.pdfIn PDF document text
    • http://year-c.com/upload_fck/file/2021-7-12/20210712213423940786.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c518f250788---tasoba.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160922f28a097d---25682704199.pdfIn PDF document text
    • http://baove24h.info/upload/files/wunonajofuzogefaxopave.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_off0000b894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB894 14784 bytes
SHA-256: fd46d7d8c8af0927a1483bf5965b0c3e28925a58583b8d7f0c2cdab88d3581a7
font_01_sfnt_off0000de59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE59 10740 bytes
SHA-256: 5efb1f97c3c5d1ea5519fdababde0fcef827eccadf4fa8df2d694d85be67f5eb
font_02_sfnt_off0000f6d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1