Malicious PDF — malware analysis report

Static analysis result for SHA-256 552e6e60d5a4fd60…

MALICIOUS

PDF

299.2 KB Created: 2021-12-18 01:57:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: ee423f4692bc9fdfa5e014a23cb4b628 SHA-1: f6ade976c7e9bac942c6336cf6afcc16b6951079 SHA-256: 552e6e60d5a4fd6093461e42621aeb1788f9cf76b9695bbfb2b8c134c2065602
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7849

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://gok-maciejowice.pl/js/ckfinder/userfiles/files/sefajagujufaje.pdf In PDF document text
    • https://happen.webasl.com/userfiles/file/jivasone.pdfIn PDF document text
    • http://freetourscadiz.com/ckfinder/userfiles/files/jinilodutikagidikubiwe.pdfIn PDF document text
    • http://comlark.ru/userfiles/files/31995046542.pdfIn PDF document text
    • http://marcobernini.it/userfiles/files/tunusuxezelotus.pdfIn PDF document text
    • https://nusbetaja2.com/contents/files/44888980072.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161a8e58fa755a---36101208415.pdfIn PDF document text
    • http://japanbizkorea.com/userData/ebizro_board/file/tamitubugaxunevanopefaj.pdfIn PDF document text
    • https://artemishosp-em.tw/uploads/files/202111280104058716.pdfIn PDF document text
    • https://www.afoa.org.ar/backend/ckfinder/userfiles/files/21757308087.pdfIn PDF document text
    • https://sergiomauri.com/images/file/pirat.pdfIn PDF document text
    • http://templeton.sk/userfiles/file/kuduvimujefukatejusi.pdfIn PDF document text
    • http://indcms.testingmachines.com/images/file/55679847652.pdfIn PDF document text
    • http://arcadia-fitness.es/userfiles/file/13167714662.pdfIn PDF document text
    • https://filetorme.com/upload/files/mafiwekojadi.pdfIn PDF document text
    • http://leprofit.ee/cmsfile/contentfiles/38453634979.pdfIn PDF document text
    • http://f-okinawa.com/img/tmp/files/binafet.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16191952bdaf3d---nejezidawutavotawome.pdfIn PDF document text
    • http://turhantur.com/turhantur/files/6496416405.pdfIn PDF document text
    • https://viveironativodevicosa.com.br/ckfinder/userfiles/files/vogakaxijuxagowetu.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/16161ada539c43---pesebilavewifeker.pdfIn PDF document text
    • http://www.barbazan-debat.fr/ckfinder/userfiles/files/letow.pdfIn PDF document text
    • http://niszczeniewaw.pl/userfiles/file/68251461339.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/boniravivuzukivep.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618e7c49ab4df---sitopanowupine.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/tgwjJlsMqHc/uplcv?utm_term=jack+reacher+3+tom+cruise+release+datePDF 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_off00043ec5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00043ec5.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00043ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43EC5 18344 bytes
SHA-256: 336fd52065d7a1a450c1d5ffc08525e683fabd0a2a88d97330eec0799335cb84
font_01_sfnt_off00046dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46DDA 10888 bytes
SHA-256: 47c76125161e1c9a8c076767b6cb100a19c48f229201522a03430951962b5aff
font_02_sfnt_off00048722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48722 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336