Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5dc91ac091a0570…

MALICIOUS

PDF

247.0 KB Created: 2022-03-07 19:21:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-06
MD5: eb6cd6ad86e40a71d3c57ab4239aab22 SHA-1: 188066f692f386ab0e74f5abfa764a01df54f3f9 SHA-256: b5dc91ac091a0570a09ce53f0f42edf957ee4992a6acc724da3aa66ca15ad37a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7139

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gastrotest.co/ckfinder/userfiles/files/63152146363.pdf In PDF document text
    • http://www.debreceni-fogaszat.hu/js/ckeditor/kcfinder/upload/files/rarenesox.pdfIn PDF document text
    • http://matras-devison.com/upload/file/bipumegomo.pdfIn PDF document text
    • http://bdnchem.com/upload/files/xawujozi.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1622026e74b9a1---donekove.pdfIn PDF document text
    • http://sarkar.ie/userfiles/file/96377599769.pdfIn PDF document text
    • https://oreopay57.com/ckfinder/userfiles/files/vefelexibaxexibakufu.pdfIn PDF document text
    • https://g-mtcc.com/motakamel/Ups/files/paxifozesogenosa.pdfIn PDF document text
    • http://omorits.jp/uploads/files/52498684703.pdfIn PDF document text
    • http://bbckorea.org/user_data/kcfinder/files/2872701429.pdfIn PDF document text
    • http://chianchang.yun2u.com/upload/files/53393009979.pdfIn PDF document text
    • http://reside-realestate.de/user_files/files/rilow.pdfIn PDF document text
    • http://tamezou.com/upload/ckfinder/files/54742670417.pdfIn PDF document text
    • http://serenetour.com/image/upload/File/jodusemade.pdfIn PDF document text
    • https://prizmaemys.com/img/files/72297877944.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/daromitazujegusupuwu.pdfIn PDF document text
    • https://en.unecol.com/uploads/kcfinder/upload/files/93995823534.pdfIn PDF document text
    • https://santechnikosdarbai.lt/images/files/28254867692.pdfIn PDF document text
    • https://www.starvisaservices.co.uk/application/elements/plugins/kcfinder/upload/files/3866372288.pdfIn PDF document text
    • http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/vovugurunaxopesawafel.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/8801e27eb2c843970c7621b64b6f32c6/27920303798.pdfIn PDF document text
    • http://leton.pl/userfiles/file/87659442486.pdfIn PDF document text
    • https://exhibitproplus.epponline.com/mentorfinancial/page_images/file/rovesakowevasufavuda.pdfIn PDF document text
    • https://lemarko.com/userfiles/file/sesew.pdfIn PDF document text
    • http://totoumi.jp/upload/file/lodabefewisorivuxez.pdfIn PDF document text
    • http://eugensa.lt/app/webroot/uploads/userfiles/files/6826154115.pdfIn PDF document text
    • http://www.dilipprabhavalkar.com/images/file/55371091659.pdfIn PDF document text
    • https://auditorescr.com/ckfinder/userfiles/files/37523991665.pdfIn PDF document text
    • http://circolosilverblufitnessclub.eu/userfiles/files/17860972745.pdfIn PDF document text
    • https://motecx.com/images/file/67924970416.pdfIn PDF document text
    • https://mytalk7.com/_UploadFile/Images/file/44050121149.pdfIn PDF document text
    • http://likebarcode.com/image/files/20220212_212107.pdfIn PDF document text
    • http://papinchess.ru/userfiles/file/butenugeraxilaxevi.pdfIn PDF document text
    • http://denizyemek.com/images/fck_upload/file/sofixisejebigixam.pdfIn PDF document text
    • https://fecuq.co.za/XSRYdR1H?utm_term=choli+blockbuster+video+songPDF 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_off00036c45.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00036c45.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00036c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36C45 18432 bytes
SHA-256: cc7fb91aa4d8f1e7697e6bbedaf0c95f371c430b0fe3dbeb7c06d7589c78230b
font_01_sfnt_off00039c28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39C28 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003b348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B348 10916 bytes
SHA-256: 440f64d9a082b51a6e85390c3bc260fcf6ace466f4188ce07ae62a26f7192aba