Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ad36856b8b5059…

MALICIOUS

PDF

370.1 KB Created: 2022-03-19 06:59:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 43052037ed10e05d6010fa66f722519c SHA-1: 3f8c0f5049abdd1f39c01b1666f2714a0a00b21e SHA-256: 18ad36856b8b5059b333bcc76671818febc1cf1a0b272ddaeedfb0a1c128dbce
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6448

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://dansensvenner.dk/imagesfile///xudebul.pdf In PDF document text
    • http://sskj.pl/userfiles/file/81787872716.pdfIn PDF document text
    • https://www.poeles-granules-vasconha.fr/ckfinder/userfiles/files/68793985297.pdfIn PDF document text
    • http://avgustal.ru/kcfinder/upload/files/7414252237.pdfIn PDF document text
    • http://nceed.kr/pds/userfiles/files/vasezemakifujapotevinub.pdfIn PDF document text
    • https://moruslondinium.org/img/files/51250583342.pdfIn PDF document text
    • https://miminku4.com/contents/files/xegetomew.pdfIn PDF document text
    • https://hotelindigha.com/FCKeditor/file/bidafasafude.pdfIn PDF document text
    • https://inflexi.com/kcfinder/upload/files/94688319364.pdfIn PDF document text
    • http://apexemergencias.com/images/files/96876474429.pdfIn PDF document text
    • http://likebarcode.com/image/files/20220218_120341.pdfIn PDF document text
    • https://ulsantour.com/FileData/ckfinder/files/20220221_A4740E2D990E1411.pdfIn PDF document text
    • http://maulich.vn/attachment/files/bububenatibasevav.pdfIn PDF document text
    • http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/vovugurunaxopesawafel.pdfIn PDF document text
    • http://tanphatinst.com/vietkiendo/upload/file/69848157506.pdfIn PDF document text
    • http://kaav.org/kcfinder/upload/files/legopad.pdfIn PDF document text
    • https://proxus.nl/file/wudonifa.pdfIn PDF document text
    • http://www.atad.ae/emanager/assets/ckeditor/plugins/kcfinder/upload/files/16198794949.pdfIn PDF document text
    • http://www.its-dph.cz/admin/fckeditor/editor/userfiles/file/xorekevavifap.pdfIn PDF document text
    • http://zbraneklapka.cz/ckfinder/userfiles/files/11206163468.pdfIn PDF document text
    • http://a-spa.org/ckeditor/kcfinder/upload/files/11611080953.pdfIn PDF document text
    • https://elpollopaulino.com/cenavarra_userfiles/files/tebotodifaf.pdfIn PDF document text
    • http://esteel.my/userfiles/file/zosumotipiziwaj.pdfIn PDF document text
    • https://ggmtc.net/userfiles/files/99492932358.pdfIn PDF document text
    • https://infancias.org/ckfinder/userfiles/files/nopolodapedip.pdfIn PDF document text
    • https://vida.posilatko.cz/files/wswg/files/663114951.pdfIn PDF document text
    • http://stroyvodservice.ru/upload/File/bipijezafabusuzetuw.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/162046bac6f24f---fabunadubo.pdfIn PDF document text
    • https://arhiapp.web-idea.ro/app/webroot/files/userfiles/files/dajoferajubokita.pdfIn PDF document text
    • https://herfection.herfection.tw/upload/ckfinder_temp/files/20220217113319.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16230d2f2dac7f---78803931419.pdfIn PDF document text
    • https://hamayeshniroo.com/shop/file/98120882827.pdfIn PDF document text
    • http://gsglamping.com/userfiles/file/20220304034550.pdfIn PDF document text
    • http://a9188.com/upload_files/art_files/files/20220207_113158.pdfIn PDF document text
    • https://fecuq.co.za/XSRYdR1H?utm_term=time+management+plan+template+for+studentsPDF 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_off00055a0b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00055a0b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55A0B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00057126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57126 17936 bytes
SHA-256: 14052bf31f754e96885ccb7acf982e3ce22a08233869e26aff04583e97a4ada6
font_02_sfnt_off00059f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59F93 10904 bytes
SHA-256: d6802d505438c905e81e9ac4a3d8359f77f762924a2df057f949d3157984d7c8