Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de7d67d95056128…

MALICIOUS

PDF

300.6 KB Created: 2021-12-17 15:22:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: 434f7a62ee40d01d81dc76735976d1ab SHA-1: abc100490bcac940cd4baed87f3073f0e19c35dc SHA-256: 4de7d67d950561288823764ca06b91033dd30f2f7c6d97ecc8185449fab6592d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8128

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://terrebleue.org/userfiles/file/nofavuzodononafekun.pdf In PDF document text
    • https://nmg.lv/img/uploads/files/39672736798.pdfIn PDF document text
    • http://atsrealtyvietnam.com/upload/files/tanomamajuwegivaxu.pdfIn PDF document text
    • https://istanajp.com/contents/files/51961506580.pdfIn PDF document text
    • https://hotelpancharatna.com/assets/userfiles/files/sekarow.pdfIn PDF document text
    • http://www.workbythai.com/admin/assets/images/18110107093.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/161371c0534cca---voxawuwiw.pdfIn PDF document text
    • http://kartelabasligi.com/images_upload/files/39568403352.pdfIn PDF document text
    • http://togul.org/sites/default/files/file/50615126715.pdfIn PDF document text
    • https://runirac2020.chandra.ac.th/webback/kcfinder/upload/files/96376677545.pdfIn PDF document text
    • http://studiotecnicoarduini.eu/userfiles/files/vafipigoleki.pdfIn PDF document text
    • https://z87992961.com/upload/files/20211117015850.pdfIn PDF document text
    • https://alves.bg/ckfinder/userfiles/files/87561640820.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617287bbd847c---12236953775.pdfIn PDF document text
    • https://www.peltonfell.org.uk/ckfinder/userfiles/files/61634422618.pdfIn PDF document text
    • https://radekslodkiewicz.pl/files/file/57967268981.pdfIn PDF document text
    • http://sunwisechem.com/Uploadfiles/files/42526546803.pdfIn PDF document text
    • https://megashina24.ru/files/files/22631271026.pdfIn PDF document text
    • https://skvely-kup.cz/files/file/32473497149.pdfIn PDF document text
    • http://nhakhoanhantin.com/media/ftp/file/18683577724.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/161aef45b723a6---91750972765.pdfIn PDF document text
    • http://kancelaria-perfect.pl/app/webroot/media/files/16460196497.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/tgwjJlsMqHc/uplcv?utm_term=how+to+program+a+clicker+remote+to+a+chamberlain+garage+door+openerPDF 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_off00044782.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00044782.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00044782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44782 16944 bytes
SHA-256: 4a3b27cd96264d4a3451649105c862933e2487cbc8c4766c352e164b7d1d8d52
font_01_sfnt_off00047328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47328 11104 bytes
SHA-256: 5ab77bf704666f8b0a60713f4b62df90b993faecf2961f9168d406b605870442
font_02_sfnt_off00048c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48C71 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336