Malicious PDF — malware analysis report

Static analysis result for SHA-256 478de4da2398c77e…

MALICIOUS

PDF

273.1 KB Created: 2022-01-04 06:05:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 4b1a94d61bc3f57d961ce38a1f82f35f SHA-1: abe01a3a1ddb4a635ffcf870185ae8057e8a8d14 SHA-256: 478de4da2398c77e00cb01001cedee7f9576241dac60a07ea0d9fdd3f1a64f91
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7818

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://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/33509b27012ec3b63574ddd77dd3092b/28692038539.pdf In PDF document text
    • http://fandimnarodaku.cz/upload/file/labijuvexopovodabipapij.pdfIn PDF document text
    • http://righetti-ticozzi.it/userfiles/files/xomiwokazikizal.pdfIn PDF document text
    • http://motorlustor.net/userfiles/file/9748901531.pdfIn PDF document text
    • https://horizontire.com/userfiles/file/vuladumolifupow.pdfIn PDF document text
    • http://brothersconsultingllc.com/kcfinder/upload/files/paxobajofazunejafepuvi.pdfIn PDF document text
    • https://tonerihned.cz/userfiles/file/depufi.pdfIn PDF document text
    • http://first-group.kr/ckupload/files/wavijinika.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/19452875975.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/xejatobosegaxiduziresu.pdfIn PDF document text
    • http://vhz.cz/user-files/77289447316.pdfIn PDF document text
    • http://stonebreaker.at/90434204672.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161627e7686c7a---sesejorifobigajefuz.pdfIn PDF document text
    • https://bcinterior.gocascadia.com/images/cms/file/71075599232.pdfIn PDF document text
    • http://lingvastar.z-i-g-z-a-g.com/userfiles/files/gedozut.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/jv8k0pvbhq504q1f2vfvk1736p/13739009720.pdfIn PDF document text
    • http://marjoleintje.nl/include/userfiles/28422845644.pdfIn PDF document text
    • https://winpoasia.com/ckfinder/userfiles/files/fafakorasejukebafo.pdfIn PDF document text
    • https://concurs-euclid.ro/upload/fck/gaxir.pdfIn PDF document text
    • http://snieznik.pl/userfiles/file/dimiza.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1616995432cc90---xibonufemoborovaguru.pdfIn PDF document text
    • http://securite.paqt.fr/images/file/nagimikebewudarusiboja.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/vItLtdF7Pec/uplcv?utm_term=montessori+3+6+classroom+guide+pdfPDF 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_off0003d54b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D54B 11396 bytes
SHA-256: 4fba54ccf3b1062249d3361929e73478c58b960acf8ecf0b82b9610a38186c50
font_01_sfnt_off0003efff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EFFF 18144 bytes
SHA-256: 25bb04ab2d2d583136cdccc2eef7167f351b8e5e99c001e94e14d03f8d128f31
font_02_sfnt_off00041ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41EC2 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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