Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8ba749d3647834…

MALICIOUS

PDF

282.9 KB Created: 2022-02-07 02:32:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: d70286a33b6e1fc0c4ed82bcab99530a SHA-1: 416cd2eb246a4d663d91cb3d411bd0944cfb8207 SHA-256: cb8ba749d36478343ffc4347c3f38016a284fd56312bb71d7519b232f1d63f5f
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7430

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
  • 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.
  • 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.
  • 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://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615d0ad9e7db9---dusaza.pdf In PDF document text
    • http://centre.annuaire-regional.com/ckfinder/userfiles/files/sudek.pdfIn PDF document text
    • http://jg-academy.com/uploads/FCKeditor/file/81794791090.pdfIn PDF document text
    • http://asv-solnice.cz/_files/file/zezedebikonavemo.pdfIn PDF document text
    • http://sinching.com/uploadpic/files/202109041751065602.pdfIn PDF document text
    • http://rockycheng.com/ckfinder/userfiles/files/legixekewewebujafezavini.pdfIn PDF document text
    • http://ledseoul.com/userData/board/file/29676217690.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/161bc6f532958a---tosurewetinurufuvivuxet.pdfIn PDF document text
    • http://shop-exclusive.cz/userfiles/file/woperujenojuduzigeteput.pdfIn PDF document text
    • http://ed-web.cz/userfilesfile/23198103032.pdfIn PDF document text
    • http://michellenevinracing.com/FCKeditor/file/10257257257.pdfIn PDF document text
    • https://ktmcollege.org/public_html/userfiles/file/sejaxewajiretefine.pdfIn PDF document text
    • https://valkexclusief.reviewz.eu/app/webroot/files/usf/files/55843153096.pdfIn PDF document text
    • https://dom4m.com/userfiles/files/gegikajato.pdfIn PDF document text
    • http://millionsdiscount.com/mo_images/files/jaradiv.pdfIn PDF document text
    • http://metisentry.net/ckfinder/userfiles/files/35874688673.pdfIn PDF document text
    • http://xahscw.com/userfiles/file/38389678731.pdfIn PDF document text
    • http://alwaysshine.com/fileimage/file/34429839443.pdfIn PDF document text
    • http://ilsogno-bomboniere.com/userfiles/files/gagirilifibo.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/8c54a7c26e11ce5233faa67e529eee54/48630129144.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1617a2aabb053d---55227960464.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1617a0ced1c41b---15692817020.pdfIn PDF document text
    • http://slkuang.com/v15/Upload/file/20211022182109643.pdfIn PDF document text
    • http://orthopaede4you.de/userfiles/file/mujakedepo.pdfIn PDF document text
    • http://grosfillex.com.br/admin/plugins/ckeditor/kcfinder/upload/files/zalasodolubajipamuxakase.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613780f65bf8c---93806653351.pdfIn PDF document text
    • http://storemisr.com/uploads/files/87786051570.pdfIn PDF document text
    • http://dharmapuridiocese.com/svnprojects/DHD/Source/images/files/doteken.pdfIn PDF document text
    • http://biznesfishki.ru/files/userfiles/files/pujixiv.pdfIn PDF document text
    • https://yoyep.co.za/XSRYdR1H?utm_term=boot+camp+2+gamePDF 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_off0003fb59.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003fb59.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003fb59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FB59 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00041274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41274 19688 bytes
SHA-256: 4c33e0815432ad67a63a14c06d9f4a8c81d221588aced1186c8936ad03a28aa9
font_02_sfnt_off000444d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x444D6 10380 bytes
SHA-256: a8fd776593832a513a91bef54cf256c6b9b2984986a291b7b92d82cc50cb9238