Malicious PDF — malware analysis report

Static analysis result for SHA-256 793871d51bcc2442…

MALICIOUS

PDF

355.8 KB Created: 2022-02-06 12:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 6120c88ddbee84bc9a56bcad36a88192 SHA-1: 3f8dcfc600bde0d953f8ebf1164746a4302746c7 SHA-256: 793871d51bcc24421db57f34e630ed7b48618629e4ff3120c36a6ff34676f4a7
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8457

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mifuj.co.za/XSRYdR1H?utm_term=affinity+designer+free+templates PDF link annotation
    • http://vinhhangvien.com/upload/files/loverozubus.pdfIn PDF document text
    • http://sochisushi.nl/survey/userfiles/files/10539505121.pdfIn PDF document text
    • https://www.tristar-technology.com/ckfinder/userfiles/files/gofumasujefemivodixuso.pdfIn PDF document text
    • http://tamezou.com/upload/ckfinder/files/45915605528.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1a0ebda4b---rafibegibaza.pdfIn PDF document text
    • http://school19-zav.ru/userfiles/file/60256619577.pdfIn PDF document text
    • http://writtenmail.com/upload_images/file/mevad.pdfIn PDF document text
    • http://sfc-dp.gov.bd/assets/ckeditor/kcfinder/upload/files/najizagijo.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/nr2sstfps2uba6afibdirud91h/zadokudeta.pdfIn PDF document text
    • https://thuhuonglacquer.com/uploads/news_file/dumogavokewinatodijinin.pdfIn PDF document text
    • http://daltan.hu/userfiles/file/57521118894.pdfIn PDF document text
    • http://vitaminyplus.eu/files/file/18554210834.pdfIn PDF document text
    • https://luxm.pl/userfiles/file/53809565130.pdfIn PDF document text
    • https://www.emcp-pmce.ca/_includes/ckfinder/userfiles/files/23275229469.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1617b7601c02ee---91031996488.pdfIn PDF document text
    • http://primewritings.grand-essays.com/media/uploads/files/70345202407.pdfIn PDF document text
    • https://varida-tech.com/ckfinder/userfiles/files/69648192221.pdfIn PDF document text
    • https://etcbt.com/userfiles/file/4228098593.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160e434c80b775---37468532072.pdfIn PDF document text
    • http://zuche0551.com/upload/file/72284095800.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005238c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5238C 10816 bytes
SHA-256: 2bf298c89ad59639e526291f1114c542ad207618fae49ebe42fa28b30dde5fa9
font_01_sfnt_off00053c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53C40 17304 bytes
SHA-256: ff0542820dfedb8b74ec8fcca46e07528e2b9cfc79c487e2bfe3b94ff725d41c
font_02_sfnt_off00056916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56916 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9