Malicious PDF — malware analysis report

Static analysis result for SHA-256 478f3311c2cf1478…

MALICIOUS

PDF

67.9 KB Created: 2021-11-05 16:05:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: dfea93c95f6ae8248ceffc63da98ed9b SHA-1: 6197555457689664eced0305f290200161f05529 SHA-256: 478f3311c2cf1478c296260b6fbdc51ade05ad5e397432696ffb4a67bfba5fec
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 http://artstudiodesign.it/userfiles/files/69179530741.pdf In PDF document text
    • http://boldogelet.hu/media/34510718431.pdfIn PDF document text
    • http://cambresisemploi.fr/ckfinder/userfiles/files/86577382961.pdfIn PDF document text
    • http://cerritos.songhakbbq.com/uploads/files/daxisutemumowezurogimane.pdfIn PDF document text
    • http://fzsvybbs.at/userfiles/file/63046359457.pdfIn PDF document text
    • http://libron.pl/fckupload/assets/file/28047835864.pdfIn PDF document text
    • https://peptidturkiye.com/ckfinder/userfiles/files/wadafivawojebote.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/eqlp30nimqtnahjfs9kb06fd7n/42016798362.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/04f7d79393bd9be2552cec76ef05703b/11123996741.pdfIn PDF document text
    • http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/wikalulinovubozekufanoze.pdfIn PDF document text
    • http://bresky.cz/res/file/44345020836.pdfIn PDF document text
    • http://thementalhealthadvocates.org/files/userfiles/file/68107071820.pdfIn PDF document text
    • http://wojno-stal.pl/pliki/file/76150284436.pdfIn PDF document text
    • http://hilimall.ae/uploads/files/90588426252.pdfIn PDF document text
    • http://salamino.pl/userfiles/file/duwatutavemutuxosofu.pdfIn PDF document text
    • https://ksi-system.pl/editorfiles/file/jetubokimulezamurebib.pdfIn PDF document text
    • http://toszegisuli.hu/userfiles/file/pololuroxabozosizijaru.pdfIn PDF document text
    • https://afmiletisim.com/resimler/files/bunepesametesevu.pdfIn PDF document text
    • https://gfwofficial.com/ck_imgs/files/95356230184.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/161834c4078c71---65050257845.pdfIn PDF document text
    • http://kielcenoca.pl/files/file/segidagirad.pdfIn PDF document text
    • http://ngnjl.com/userfiles/files/79675565589.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/17f8193f6201375b2a138a92170a7802/13324820506.pdfIn PDF document text
    • https://jsptti.com/ckeditor/ckfinder/userfiles/files/kizexuka.pdfIn PDF document text
    • http://tatishev.ru/admin/ckfinder/userfiles/files/97737119692.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/896FEnmJZlk/uplcv?utm_term=the+broodals+plushPDF 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_off0000a701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA701 10400 bytes
SHA-256: fff55215c34417439b8a5fb847337d02ddae963607e6ed61a272854050b423e0
font_01_sfnt_off0000be6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE6B 16872 bytes
SHA-256: a47c2d53940cae2b358c82a46090524b48ff3b750ad3fc5f8ef924108beac66f
font_02_sfnt_off0000e99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99D 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef