Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb82b765ac942ef1…

MALICIOUS

PDF

378.2 KB Created: 2022-03-10 20:24:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 4f3cb89e171131273ef34e250a8cbbec SHA-1: e8f8decaa77dc4cc41fb59d6a7f756ab318583c9 SHA-256: cb82b765ac942ef1a53fddc3506d63ed0d1b908b324f27f2006edd93895f6d37
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6197

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
  • 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.
  • 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.
  • 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://progrow-egypt.com/userfiles/file/75720162646.pdf In PDF document text
    • http://busankid.com/webfiles/board/file///lubolu.pdfIn PDF document text
    • http://infotechloyalty.com/bot/ckfinder/uf/files/3292307176.pdfIn PDF document text
    • http://www.swaving-stalinrichting.nl/ckfinder/userfiles/files/mixetujukikir.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16205dbce76c6a---kutemenumujoziwiwopot.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/9092750809.pdfIn PDF document text
    • http://muratdizayn.com/panel/kcfinder/upload/files/fulopitajil.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/bopibagusebumeravoxi.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/4208984091.pdfIn PDF document text
    • http://aktifithalat.com/resimlerfiles/julemozoxixupibixalavenin.pdfIn PDF document text
    • http://safetruck.gr/images/file/toxudunuxivor.pdfIn PDF document text
    • http://ttlh.vn/storage/ckfinder/files/bupawo.pdfIn PDF document text
    • https://infypos.cncmonitors.com/infyposcms/media/10524770827.pdfIn PDF document text
    • http://datavincity.com/uploads/ckfinder/files/43154696669.pdfIn PDF document text
    • https://dursunguney.com/userfiles/files/51202566529.pdfIn PDF document text
    • http://cfboxrx.com/js/kcfinder/upload/files/dupaxubuvufopufidotila.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620511ce8bcce---tamajogamedajap.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621a5e5aa4ea5---memabud.pdfIn PDF document text
    • http://elixiriso.com/kcfinder/upload/files/zaluxokasuberodanul.pdfIn PDF document text
    • https://kingsnews.org/app/webroot/js/image/files/likijux.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/46771107991.pdfIn PDF document text
    • https://www.akita-tourism.com/assets/admin/plugins/kcfinder/files/pawomovudejo.pdfIn PDF document text
    • http://veterinariacasettamattei.it/userfiles/files/47807990560.pdfIn PDF document text
    • https://lionkingbali.com/uploads/file/88570838478.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/cbkam9cvvtsv31q0f1ul0o3k13/nosizi.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/vasexexosoj.pdfIn PDF document text
    • http://aucoindeshalles.fr/menu/file/noliw.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/bed3e6131638e3f2fc60142efc331bee/19309866438.pdfIn PDF document text
    • http://ilkemymm.com/image/files/36980259222.pdfIn PDF document text
    • http://www.politico.cnm.org.br/ckeditor_custom/kcfinder/upload/files/79845908189.pdfIn PDF document text
    • https://yubit.co.za/XSRYdR1H?utm_term=file+base.+apkPDF 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_off00057b93.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00057b93.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B93 10100 bytes
SHA-256: 68cacc47495668f38108e48053e3b3aee118742b05cdb53fb9130249373c8e71
font_01_sfnt_off000591e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x591E5 19128 bytes
SHA-256: d8fc7315f4f70ad40c9dcfe4b6d6da51ccb437d23856b3f0f199abdda4106fe4
font_02_sfnt_off0005c264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C264 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9