Malicious PDF — malware analysis report

Static analysis result for SHA-256 99534694ed9461d1…

MALICIOUS

PDF

417.5 KB Created: 2022-03-16 03:17:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-26
MD5: 1853b46861b181e1eaee03ee63c40158 SHA-1: 2723071463f6f5172a20efe33d73702363a46261 SHA-256: 99534694ed9461d1b3ff494d59cf903c8923090fcdb59ef23ad1073fa5ae8b3b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4866

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://tulga.ru/editor/files/gotepamesinosivotobipe.pdf In PDF document text
    • http://cukierniabrzezinski.pl/www/artizam/fck/file/62563405669.pdfIn PDF document text
    • http://pead.org.bd/assets/ckeditor/kcfinder/upload/files/42542534073.pdfIn PDF document text
    • http://happinessgown.com/upload/users/files/sogozuxew.pdfIn PDF document text
    • https://www.kidilangues.fr/js/kcfinder/upload/files/2005123685.pdfIn PDF document text
    • https://www.bevillelecomte.com/ckfinder/userfiles/files/85820186649.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1622579af3f2a0---konazuzelagizizesagim.pdfIn PDF document text
    • https://robvandamfoto.nl/UserFiles/files/11375971735.pdfIn PDF document text
    • https://xuantruongtech.com/images/ckeditor/files/nudabamixaniwepe.pdfIn PDF document text
    • https://genegurumiraclehealer.com/userfiles/file/xajiwisirorapegobo.pdfIn PDF document text
    • http://www.mattig-accounting.bg/fisiere/file/sobizovibakukiwav.pdfIn PDF document text
    • http://meruzhankhachatryan.com/app/webroot/files/file/bireruzuvivovidipikizufad.pdfIn PDF document text
    • https://dkglobalrecruiters.com/admin/public/ckeditor/upload/files/94212443517.pdfIn PDF document text
    • http://numberprotect.com/admin/kcfinder/upload/files/xoweje.pdfIn PDF document text
    • http://adaviestransportltd.com/userfiles/file/63272504247.pdfIn PDF document text
    • https://g4m3s-4p1-12s1.com/contents/files/18509947456.pdfIn PDF document text
    • https://hsdinstruments.nl/uploads/files/fudimafokuvezabezibu.pdfIn PDF document text
    • https://nesselaarbestratingen.nl/plaatjes/file/53127870775.pdfIn PDF document text
    • http://rkenterprisesonline.com/FCKeditor/file/2932432011.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622ef33324c09---46896519648.pdfIn PDF document text
    • http://bcma.com.bd/backend/web/kcfinder/upload/files/dopotamuposu.pdfIn PDF document text
    • https://www.montferri.com/admin/js/plugins/kcfinder/upload/files/19609630309.pdfIn PDF document text
    • https://sharedsynergy.com/userfiles/file/18362671514.pdfIn PDF document text
    • http://terrigena.cz/data/pic/files/vatabeget.pdfIn PDF document text
    • http://insightonafrica.in/userfiles/file/49919676688.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/162120aed2b22e---19302361293.pdfIn PDF document text
    • https://ragaz.co.za/XSRYdR1H?utm_term=vehicle+checklist+format+in+excelPDF 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_off00061921.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00061921.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00061921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61921 17568 bytes
SHA-256: c81169155a67ab12445e96a8f07c68d1022c917ff409dbb591ee4de1b52e850d
font_01_sfnt_off000646fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646FB 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00065e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E1B 10764 bytes
SHA-256: 0f7f83b933410a4a06a74204dcb590658399801f1365f66ee2c7a882372dbff8