Malicious PDF — malware analysis report

Static analysis result for SHA-256 5526d57468db8bf9…

MALICIOUS

PDF

81.0 KB Created: 2021-11-09 15:04:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: a9fbb49f288a7f9c7a6d38e4eff291e6 SHA-1: 9713470fb7f36b6c5278ec70dc19e4dfe754efc1 SHA-256: 5526d57468db8bf9d341cedd5c8a25470f9beedd2f0d3d39047398023ca9c2f8
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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 https://pastijptoto.com/contents/files/70861096119.pdf In PDF document text
    • https://jogamiskolc.hu/ckfinder/userfiles/files/bibowol.pdfIn PDF document text
    • https://tp-pos.com/uploads/image/files/gosedawitoxomevak.pdfIn PDF document text
    • http://dury114.com/userData/ebizro_board/file/buvutilapoxonopeburalibu.pdfIn PDF document text
    • https://www.q-jin.ne.jp/ckfinder/userfiles/files/69166814507.pdfIn PDF document text
    • http://actlogistic.vn/upload/editor/files/mowepagisubijojifon.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/6658d5334d9e3596e950a161b77a88db/1967894958.pdfIn PDF document text
    • https://nsaimmigration.com/userfiles/file/visibigurifu.pdfIn PDF document text
    • http://learnazia.com/fck/imagesfile/giliwezavowabisave.pdfIn PDF document text
    • http://aftp.bg/userfiles/file/58027193528.pdfIn PDF document text
    • http://packturf.fr/files/busojamafukuxij.pdfIn PDF document text
    • http://www.mousumibanerjee.com/fckimages/file/gikizopefezeputoj.pdfIn PDF document text
    • https://myclubowners.travelenvogue.com/userfiles/files/21494067850.pdfIn PDF document text
    • https://piti.leaddeehub.com/userfiles/files/rekubenalujowamasizut.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/a58684a42321a37f2b68b9772e3a2c8d/35832780449.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16174badc4a11f---perabejuluzi.pdfIn PDF document text
    • http://kunbot.com/upload/files/sunefasizokowodiwojegi.pdfIn PDF document text
    • http://clinicaveterinariabilancino.it/userfiles/files/jolotixagelobevubuk.pdfIn PDF document text
    • http://quartierdete.fr/uploads/fckeditor/file/5194902524.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/n0itdb86m607g7bpm3bg978c64/dinajar.pdfIn PDF document text
    • https://profipreklady.cz/www/ckfinder/userfiles/files/folanekegowadadebekexexe.pdfIn PDF document text
    • https://haltia.mx/sii/ckfinder/userfiles/files/81439633325.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16143777d5f639---1186898149.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/63bbe11ed5dcdbd55445610ed47556e7/88400330779.pdfIn PDF document text
    • http://tiyuchangdi.com/upload_files/files/20210908_185123.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/xPAns0MRe5M/uplcv?utm_term=sovereignty+definition+ap+human+geographyPDF 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_off0000d612.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d612.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD612 11084 bytes
SHA-256: b26e211b2cdbb9ce1b88a56126b47f5bc18c11c32f313dbba4ab45ed732fd973
font_01_sfnt_off0000ef92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF92 18264 bytes
SHA-256: 344a59c4732800627b0c2bcd00ff507e84c33173583b28ea5aa12bb6420987f3
font_02_sfnt_off00011ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF6 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef