Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc846d4f26c922c…

MALICIOUS

PDF

226.6 KB Created: 2022-01-07 09:55:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: ba768048dbb1f5b3a0f45847acd23d7b SHA-1: e8151e5842ba0a56a9b01fb1f2f41a4977450fba SHA-256: 1dc846d4f26c922c3f1f16caf45dd955166c38d54c18b3449d958f87a0188572
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8518

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161c0cac565623---jeruzakexorinuteso.pdf In PDF document text
    • https://www.abh.net.br/kcfinder/upload/files/40622820859.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/16151a52378d8a---11217492895.pdfIn PDF document text
    • http://vipnovini.bg/root/f/uploads/files/junilorug.pdfIn PDF document text
    • http://millenium.moscowfashion.net/content/xuploadimages/file/57527362232.pdfIn PDF document text
    • http://studiosantese.eu/userfiles/files/tezakavefiw.pdfIn PDF document text
    • http://mwbright.com/upload_fck/file/2021-10-21/20211021222108291119.pdfIn PDF document text
    • http://www.vizilo-vizitura.hu/admin/kcfinder/upload/files/99774267489.pdfIn PDF document text
    • http://digifast.cz/userfiles/95076604525.pdfIn PDF document text
    • https://goldengatetaichiqigong.com/userfiles/file/54250312401.pdfIn PDF document text
    • http://www.park-seversk.ru/other/js/ckfinder/userfiles/files/93593979864.pdfIn PDF document text
    • http://sobinco.cz/ckfinder/userfiles/files/favos.pdfIn PDF document text
    • http://dogwarts.ru/sites/default/files/file/13056390651.pdfIn PDF document text
    • https://ever-progress.dacola.com/upload/files/fawupavisimopixivonejiki.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/95916610931.pdfIn PDF document text
    • http://megatex-plast.ru/pub/file/vatufivugiwevu.pdfIn PDF document text
    • http://jumpinfit.it/userfiles/files/92626697459.pdfIn PDF document text
    • http://e-store-sys.com/userfiles/file/pojop.pdfIn PDF document text
    • https://tumujerrusa.com/userfiles/dijikowujuravon.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/161743158279ac---50393522523.pdfIn PDF document text
    • http://www.pratikchoudhury.com/fckimages/file/77687098942.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16181b71c66779---7694681672.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614b27810e1f4---31076543639.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/qu4entf10ja8ib8nv3gjbqcbip/jadiripigifu.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/xPAns0MRe5M/uplcv?utm_term=browser+open+blocked+sites+for+androidPDF 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_off00031b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B22 18784 bytes
SHA-256: 366eba191f9dce8d0612ecb04c65b44cfac47567d0b680d79b1b21baebc7e0bc
font_01_sfnt_off00034ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34BA8 10984 bytes
SHA-256: c700e80a54714dee90d3d7964870dd49a1a509ad7475a0fc2b5797b4d40b4bf2
font_02_sfnt_off0003652c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3652C 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336