Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d39a7d818c1a4e…

MALICIOUS

PDF

341.3 KB Created: 2022-03-18 19:34:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-28
MD5: c34afce528c69040080b4714534edcfa SHA-1: bebfd028d45af77d2512334e727b739764419a9e SHA-256: c7d39a7d818c1a4e55bd725be4bb4a569be92b4c001e80bf30a5f20dda09d108
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6763

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://tevav.co.za/XSRYdR1H?utm_term=electron+configuration+worksheet+5-+6 PDF link annotation
    • https://sevenhillsgroup.net/ckfinder/userfiles/files/kijagagexito.pdfIn PDF document text
    • https://postelezmasivu-liberec.cz/ckfinder/userfiles/files/50213715951.pdfIn PDF document text
    • http://vinag7furniture.com/app/webroot/files/editor_upload/files/weviwuxufiluniwegodor.pdfIn PDF document text
    • https://fr.unecol.com/uploads/kcfinder/upload/files/63810641665.pdfIn PDF document text
    • https://qingyaclocks.com/editor_upload/file/zaxifu.pdfIn PDF document text
    • http://veoguidecostarica.com/ci/userfiles/files/vajajomulowivakedageduz.pdfIn PDF document text
    • http://libertyquad72.fr/userfiles/file/71606133706.pdfIn PDF document text
    • http://apothepharma.com/upload/files/97830180921.pdfIn PDF document text
    • http://pantanalmsnews.com.br/ckfinder/userfiles/files/nozofiwotanuzakifatidot.pdfIn PDF document text
    • https://matfreklam.com/calisma2/files/uploads/21372010622.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/0faf3c92e0deba69e4e5faba25fa47b8/86933410698.pdfIn PDF document text
    • http://progressive-auto.ru/app/webroot/js/kcfinder/upload/files/kigidomevododexidod.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/98aa8b4792ad69390a9ff358bb8b3867/kibatibobowofulunekakax.pdfIn PDF document text
    • http://www.ghidmariaj.ro/app/webroot/files/ckfinder/userfiles/files/40900226953.pdfIn PDF document text
    • http://thechitay.com/uploads/userfiles/file/kotataxadun.pdfIn PDF document text
    • https://www.paseppe.gr/ckfinder/userfiles/files/30764335789.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622bb60518227---97402677746.pdfIn PDF document text
    • http://gnmh.rene-mense.de/fckeditor_files/file/pifazepigoberiwa.pdfIn PDF document text
    • http://bigbulkbags.ahmadpackages.com/survey/userfiles/files/70281187254.pdfIn PDF document text
    • https://momsgardenfoods.com/ckfinder/userfiles/files/zemipibobuzo.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/d00aee121140a4791ad1809bc38c5d3f/mopufewo.pdfIn PDF document text
    • https://webmedcentralplus.com/userfiles/file/74265440975.pdfIn PDF document text
    • https://prcomponents.com/ckfinder/userfiles/files/tolonafowunuwijuv.pdfIn PDF document text
    • http://sz-nuoyi.com/Upload/file/2022022013443485393.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/25720281580.pdfIn PDF document text
    • https://tavio.ru/files/file/muliwurino.pdfIn PDF document text
    • http://hzdsbg.com/uploadfile/1644379950.pdfIn PDF document text
    • 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_off0004e818.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004e818.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004e818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E818 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004ff33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF33 17172 bytes
SHA-256: a19319a21e84171a10b1c0b9cfa45edc6b4c7ab80f6a7729bcb83b9cdc8855c2
font_02_sfnt_off00052b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52B85 11212 bytes
SHA-256: 24c7ea97b0a7b1673c736af08f35ed854aee38cf4d4e0c2157c855acb3814321