Malicious PDF — malware analysis report

Static analysis result for SHA-256 782bff46cf1809cc…

MALICIOUS

PDF

72.8 KB Created: 2021-12-14 02:51:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: b510664394727133b9fb42f0763e4421 SHA-1: 31f9a93a7ba34b22edbc2af1b4bb555db80cfab9 SHA-256: 782bff46cf1809ccfdec983831b6cc0e78c5212ac599fb582d5ede8809df7b7c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://kingyao.com/uploadfiles/files/20211020_135910_4636.pdf In PDF document text
    • http://www.cafeinca.com/img/public/contenido/file/37392689728.pdfIn PDF document text
    • http://starwindows.ie/ckfinder/userfiles/files/3808626145.pdfIn PDF document text
    • https://online-wums.com/files/files/fupolewejigonisomu.pdfIn PDF document text
    • http://aktasmatbaacilik.com/resimlerfiles/16368285654.pdfIn PDF document text
    • http://revize-elektro.info/UserFiles/File/misafozexovovigemuguj.pdfIn PDF document text
    • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/gugesadetapajabejatimez.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161afe5a80e6b6---60355545349.pdfIn PDF document text
    • http://nwmanagement.ru/generic/uploaded/file/fawiviwezumemure.pdfIn PDF document text
    • http://nuklearmedizin-amro.de/userfiles/file/nazakonajavef.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615fcdcf435a8---xalowafozozubemodujisimi.pdfIn PDF document text
    • https://raljob.com/userfiles/file/57121830523.pdfIn PDF document text
    • https://ccrm.dreamcoders.net/Attachments/File/sapoxuwanirumulup.pdfIn PDF document text
    • https://openkomm.yussfone-crm.com/userfiles/file/89512230776.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16178bf94834af---povipiduxejejidutix.pdfIn PDF document text
    • http://oasishs.com/uploads/files/20211003_033038.pdfIn PDF document text
    • https://snapstudios.ca/userfiles/file/nirevigizosoganepifufudor.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1617f1841f3fb3---voweradiwiwujobel.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/9325d33350062946a17f988967ce7604/nabogi.pdfIn PDF document text
    • http://lex-ter.ru/admin/ckfinder/userfiles/files/42799638354.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/61160477240.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1618ee046869df---12422295830.pdfIn PDF document text
    • http://rosesrealtyhomes.com/userfiles/files/dowas.pdfIn PDF document text
    • http://videlec.be/ressource/file/garepa.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/u-9XGpgKpwY/uplcv?utm_term=ms+project+2016+pdf+exportPDF 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_off0000b92b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB92B 16956 bytes
SHA-256: 95e677b16654ea13435793bfdb6b3290b8201d76151b90d07b3cda141aed3148
font_01_sfnt_off0000e533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE533 10896 bytes
SHA-256: c6e28af5b4e41a5184761a43c0f986a75052186fcf5f0bff91e9569e70bbdd61
font_02_sfnt_off0000feae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEAE 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336