Malicious PDF — malware analysis report

Static analysis result for SHA-256 5527f4255a948408…

MALICIOUS

PDF

498.9 KB Created: 2022-02-04 20:57:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 19adf4b43f0b715815cab9e6ec8594a6 SHA-1: 1bb5f19e5e250c0b533449625c371b2fa005cf1f SHA-256: 5527f4255a94840810e7ac96b0973e220efa0aa80c1a175fddaad64cc67098c7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4301

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 http://the-bom.kr/upfile/files/widepusepuwapezilasuliti.pdf In PDF document text
    • http://mxag.com/upload/browse/file/kinogigelirugip.pdfIn PDF document text
    • http://unii-dz.org/app/webroot/js/kcfinder/upload/files/77683017095.pdfIn PDF document text
    • https://maryamghiasi.com/images/upload/files/baxixinoj.pdfIn PDF document text
    • http://busankid.com/webfiles/board/file///guwuvogufetojejafiwula.pdfIn PDF document text
    • https://galerieportelouise.be/userfiles/files/musuzizakusaxedepul.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/33a4cd5cc50d3d1bff71939e1885114d/zexamifimatatu.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/42616367011.pdfIn PDF document text
    • http://hanker.ru/web/img/files/86077951394.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/lizudumorojosubimuluf.pdfIn PDF document text
    • http://czyxchem.com/upload/files/vekal.pdfIn PDF document text
    • http://helix.chuing.net/mai/ckfile/files/57575896296.pdfIn PDF document text
    • http://studiopignotti.it/userfiles/files/42042357001.pdfIn PDF document text
    • https://webshopplus.nl/app/webroot/files/userfiles/files/kanotozogifidi.pdfIn PDF document text
    • http://pantanalmsnews.com.br/ckfinder/userfiles/files/31213520885.pdfIn PDF document text
    • http://xz-brand.com/ckfinder/userfiles/files/65738646563.pdfIn PDF document text
    • http://anke.de/data/anke.de/uploadfiles/file/mefabunijedutunekunupewuf.pdfIn PDF document text
    • https://nhahangbienhaitien.com/uploads/files/48246898939.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/nulugovufod.pdfIn PDF document text
    • https://ssvacancy.com/ckfinder/userfiles/files/rovedutin.pdfIn PDF document text
    • http://ourpreferred.com/userfiles/files/68445995138.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/16161f2b955b62---33446219056.pdfIn PDF document text
    • http://marjoleintje.nl/include/userfiles/ginomonokutefuligarurew.pdfIn PDF document text
    • https://protrialse.eu/files/files/61550174626.pdfIn PDF document text
    • http://orlickachata.cz/files/files/jeluvinilubiw.pdfIn PDF document text
    • http://grabnerestriche.at/kadoxiletuvudiz.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615066ce310e3---zepikivumasabitokolaxax.pdfIn PDF document text
    • http://techmechengineers.com/uploads/bewutagumidefidinuja.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/161051ef37f4ef---31689357944.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=alaska+black+bear+hunting+guidesPDF 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_off00075dbc.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00075dbc.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00075dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75DBC 17792 bytes
SHA-256: a4c4f34167598832fe1802b3de42f373553d1324430e050d83e019f5ade99f1d
font_01_sfnt_off00078c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C29 10844 bytes
SHA-256: 3a007e11c592f0ad636635d43cfc8dfb1b404dace1a1ad5803482b9c1b97b2c8
font_02_sfnt_off0007a4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4F5 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9