Malicious PDF — malware analysis report

Static analysis result for SHA-256 793c12e9261728d1…

MALICIOUS

PDF

274.6 KB Created: 2021-12-25 23:47:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 0a621ecd786d6bc2b2d945b6424ac581 SHA-1: 2b83e73b58168b5bf45422a47c1068cbe8f7c853 SHA-256: 793c12e9261728d122e5bfc733af0020b720da098df47ea645e6d489818539c7
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8053

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 https://psiakocky-potisk.cz/webpagebuilder/ckfinder/userfiles/files/wutegufogozitelosejabu.pdf In PDF document text
    • https://ckeditor.pamlskovnik.cz/ckfinder/userfiles/files/vuvifazopuvivifovexusora.pdfIn PDF document text
    • http://bronia.org/userfiles/file/guxosuxerapoxi.pdfIn PDF document text
    • http://metzgerei-bischof.de/userfiles/file/bodesukonafawi.pdfIn PDF document text
    • http://tongrentangthai.com/UserFiles/file/xezulogurixafusikogitowu.pdfIn PDF document text
    • http://cx-gl.hu/images/files/jufifil.pdfIn PDF document text
    • https://creativenursery.net/home/creative/public_html/ckfinder/userfiles/files/xawogixujawase.pdfIn PDF document text
    • https://dbmotorbrokers.com/userfiles/file/garowinakibegogu.pdfIn PDF document text
    • http://thestarbusan.com/FileData/ckfinder/files/20211127_E06276EA4B4C99BB.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/3lvnb86e7fak1cf24hsu4n5cbm/44817287338.pdfIn PDF document text
    • http://vytvarnyobchod.cz/UserFiles/File/relolatakalez.pdfIn PDF document text
    • http://inwallendorf.de/userfiles/file/99413921231.pdfIn PDF document text
    • http://eiak.org/upload/editor/files/24992113252.pdfIn PDF document text
    • http://texmet.pl/userimages/file/nokedejilemone.pdfIn PDF document text
    • http://immobilieninvestors.org/userfiles/file/5274533559.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/995d31473fad61088fcfff03d7029e16/jisedupexamitubo.pdfIn PDF document text
    • http://spbmedaks.ru/sites/default/files/uploads/bopododera.pdfIn PDF document text
    • http://buydecor.ru/uploads/files/rarotegodopozubederata.pdfIn PDF document text
    • https://er-cardiff.com/eurostyl/photos/file/xewazadewegiwusikot.pdfIn PDF document text
    • https://www.cylinder96.ru/admin/ckfinder/userfiles/files/8140599887.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/0a61cee2a6b2645822c65dd79de5cf37/mogevubefokule.pdfIn PDF document text
    • http://kalikraft.com/images/file/wezewex.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/Z3ufxtS7Wvw/uplcv?utm_term=high+dose+metformin+weight+lossPDF 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 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_off0003e115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E115 16788 bytes
SHA-256: ec62f38efa5cdf40eb0a12fe05c7d609b1b8f97e04bb67fde42b8a93c1c9f574
font_01_sfnt_off00040c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40C70 10716 bytes
SHA-256: 27b853d51657a29add5357df1ba059576a5043b30916fdf96265931436253d8f
font_02_sfnt_off000424a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x424A1 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336