Malicious PDF — malware analysis report

Static analysis result for SHA-256 25160b6a1509cbe4…

MALICIOUS

PDF

72.7 KB Created: 2021-11-28 16:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 7667073c60fdec71b7f1b0a94cdd3e2b SHA-1: 2f8cdaeb4f1d8100911f7c31075da9d378a55e7a SHA-256: 25160b6a1509cbe45b6ddd9ef7bef3565492890ec0815d82f94737496b66d5bc
181 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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 http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a0e6e4e5617---rejesalu.pdf In PDF document text
    • http://actybrain-consult.com/Upload/files/sunimap.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16141cbdaefa54---84680290353.pdfIn PDF document text
    • http://coconut.hu/userfiles/file/kixekigojodoxaja.pdfIn PDF document text
    • http://suliaok.com/v15/Upload/file/2021102217394252.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/19e30900a985eb8b7e59274821436559/29623916872.pdfIn PDF document text
    • https://korzayithalat.com/spot/admin/fckeditor/userfiles/file/pabam.pdfIn PDF document text
    • https://centrehistoriquesndbc.com/ckfinder/userfiles/files/35702812833.pdfIn PDF document text
    • https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/86457592226.pdfIn PDF document text
    • http://capital96.com/userfiles/file/dosobinuko.pdfIn PDF document text
    • http://phucuongplus.com/upload/files/40274523361.pdfIn PDF document text
    • http://ruihuitax.com/files/file/2195185579.pdfIn PDF document text
    • https://ecohort.com/userfiles/files/zexorarikugob.pdfIn PDF document text
    • https://portecitadelle.portecitadelle.ca/ckfinder/userfiles/files/forojuj.pdfIn PDF document text
    • https://frmf.merkafoot.com/stock/file/98585969133.pdfIn PDF document text
    • http://www.rajpuc.pl/pics/file/gilunawogokepimu.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/8mh2nc4plp9susl314kqqjuj1o/kunenawajanow.pdfIn PDF document text
    • https://valkexclusief.reviewz.eu/app/webroot/files/usf/files/xovovulufegowesokubodol.pdfIn PDF document text
    • http://bvphcn.bdata.vn/upload/files/tedoxaropidiz.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619b9ae652b5f---74651075380.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/nisidozuvubugunu.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/15358684882.pdfIn PDF document text
    • https://oniceh.ru/uplcv?utm_term=mayflower+families+through+five+generations+onlinePDF 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 extracted file (font_00_sfnt_off0000b8a0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b8a0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A0 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000cf3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF3F 17160 bytes
SHA-256: dde584c865f979a28e627a20359744be260a810572b2430491b5715dce067fba
font_02_sfnt_off0000fbf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF4 11020 bytes
SHA-256: 0f951602b5f4577a4855388dbc362792891bdf391e90f99819cd348bf359e29e