Malicious PDF — malware analysis report

Static analysis result for SHA-256 657cfbf288095dfe…

MALICIOUS

PDF

306.6 KB Created: 2022-03-24 14:24:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-08
MD5: 198ba3a82ab4e2ba493f78dbc152d0a3 SHA-1: 166dd4ac15c4de7655dd39801a946543cc4127c9 SHA-256: 657cfbf288095dfe5e26d0c880f3861a75a160a8299c19018f1f7014c4ba13f6
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7379

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 http://mictrogiang.com/userfiles/files/sopanupu.pdf In PDF document text
    • http://www.jo-hubert.fr/upload/files/73227079667.pdfIn PDF document text
    • http://dongtienlamnghiep.com/upload/file/45377016229.pdfIn PDF document text
    • http://martonfogtechnika.hu/admin/kcfinder/upload/files/gokagadiritaruber.pdfIn PDF document text
    • http://nicenpos.com/userData/board/file/4490240372.pdfIn PDF document text
    • http://www.lacalzadadeoropesa.es/abm/Bibliotecas/kcfinder/upload/files/40137288230.pdfIn PDF document text
    • http://whatifitspossible.com/ckfinder/userfiles/files/46043338306.pdfIn PDF document text
    • https://sensesgrouphk.com/louis/STARKGROUP/ckfinder/userfiles/files/89055751962.pdfIn PDF document text
    • https://www.mvfht.ca/kcfinder/upload/files/jutaguvipenubiso.pdfIn PDF document text
    • https://mithaiwala.uk/dayafter/uploadimages/newsimages/file/dabigodakesipokenupevojap.pdfIn PDF document text
    • https://nepalonetours.com/userfiles/files/zadavutanuv.pdfIn PDF document text
    • http://azs-szermierka.pl/zdjecia/fck/file/98482163367.pdfIn PDF document text
    • https://ppntassone.it/dati/upload/file/lobegerufow.pdfIn PDF document text
    • https://llc-sahara.com/site/files/rirekage.pdfIn PDF document text
    • http://wedooverseas.com/userfiles/file/48699380935.pdfIn PDF document text
    • http://msdoubrava.cz/foto/images/file/muwipumefukenun.pdfIn PDF document text
    • http://raiz.jp/kcfinder/upload/files/latuverobibavaremotatida.pdfIn PDF document text
    • http://reklamnizbozi.cz/data/upload/files/61951873418.pdfIn PDF document text
    • http://schokobrunnen.com/idata/tusivewixivupox.pdfIn PDF document text
    • http://elixiriso.com/kcfinder/upload/files/21726457663.pdfIn PDF document text
    • https://ttablaksystem.hu/files/file/kutiguzuluj.pdfIn PDF document text
    • https://natanashoes.com/kingkong/userfiles/files/2149582625.pdfIn PDF document text
    • http://suamayin.biz/userfiles/file/62016307071.pdfIn PDF document text
    • http://genesisglobalbd.com/assets/ckeditor/kcfinder/upload/files/kidizisa.pdfIn PDF document text
    • https://m-s-g.ru/userfiles/files/12972253781.pdfIn PDF document text
    • https://filharmonie-brno.posilatko.cz/files/wswg/files/gemokogubusewupifibig.pdfIn PDF document text
    • http://yesilderecine.com/admin/editor_resim/file/taxuxe.pdfIn PDF document text
    • https://mrpressconsulting.com/UserFiles/file/77312946520.pdfIn PDF document text
    • http://zgkimsteszew.pl/img/upload/files/78188271606.pdfIn PDF document text
    • https://olympicaccessoriesbd.com/assets/ckeditor/kcfinder/upload/files/lezarufifa.pdfIn PDF document text
    • https://www.yildiztto.com/kcfinder/upload/files/waminisudigulazorifopo.pdfIn PDF document text
    • http://jovanrajsic.net/storage/files/gijemox.pdfIn PDF document text
    • http://tokstar.com/_UploadFile/Images/file/rumagominapejakane.pdfIn PDF document text
    • https://phnews.ro/files/file/33055935437.pdfIn PDF document text
    • https://sunuf.co.za/XSRYdR1H?utm_term=hanefijski+fikh+pdfPDF 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_off00045d24.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00045d24.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00045d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45D24 10444 bytes
SHA-256: d54b7ea599bc688ce763242f3a51e452496248d460b1fd25cbcaf467381634fa
font_01_sfnt_off000474a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x474A6 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00048bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48BC1 18284 bytes
SHA-256: 46abede51f2f161a356629d514346fb5378658fa06ff0b7edd6c3ceaf349971a