Malicious PDF — malware analysis report

Static analysis result for SHA-256 4788db648e8979b0…

MALICIOUS

PDF

358.0 KB Created: 2021-08-15 22:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: a575b35b59146aa18f7f0fdedaeb1397 SHA-1: 3eb0745ccafd0c334e8347f35c01f81defcefd84 SHA-256: 4788db648e8979b02e9c0732cb6f14cb46e5e68516043db7f19408d4b2b7be57
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9240

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://h1t-urlaurora1-turbo.com/contents//files/34739475137.pdf In PDF document text
    • https://pharma-tools.eu/galeria/file/makujipotuvexizozegazibes.pdfIn PDF document text
    • http://rld-carbon.ru/file/juwijojazamulevesupuzara.pdfIn PDF document text
    • http://aaaexpressac.com/userfiles/file/16330550006.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160759da810d90---pobubigugumasile.pdfIn PDF document text
    • https://www.oalysa.cz/ckfinder/userfiles/files/92472147199.pdfIn PDF document text
    • http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16080086554f9b---83365656708.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/219227be006d50906f75a854b6cff9f6/44653815871.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/8a19ae8fe9b3e59b1e1dcbd29f7d0a7c/38993851838.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/16101164930f89---futifajazogasusikixema.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/d8ab0596382ccdc4ad5e9d4d52abc53c/wuwumofulutaz.pdfIn PDF document text
    • http://eurekaelearning.com/upload/news/file/45441060947.pdfIn PDF document text
    • https://beaszemin.com/files/9479776361.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607141a93a0b2---54855660877.pdfIn PDF document text
    • http://daiichihr.com/uploads/news_file/71229855395.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af7b8f94314---72283336437.pdfIn PDF document text
    • http://backyardreleaf.ca/clients/6/6a/6a4eaaf8452764cb6fc14c9064ed0c71/File/99657629975.pdfIn PDF document text
    • https://mosconi.net/userfiles/file/3206428549.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161122f5908018---11723463021.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1608755aee6831---54334836664.pdfIn PDF document text
    • http://apluskleaning.com/admin/images/file/vizuxaniweriwuximozi.pdfIn PDF document text
    • https://bistakalikotenetwork.com/userfiles/file/vovezibepolokaz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=capitulo+5b+prueba+5b-1+answersPDF 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_off0005242c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5242C 19400 bytes
SHA-256: f5faf99bb66ee973f2112f2d1f124b56c31c726a1b560ab00b2a2c147acef6a2
font_01_sfnt_off00055610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55610 10820 bytes
SHA-256: 4399fff338e3c45458884b1ff1e89f43f593e3a0c2dbf9138a86b65cf33700ff
font_02_sfnt_off00056f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56F22 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1