Malicious PDF — malware analysis report

Static analysis result for SHA-256 552f27d89697bab4…

MALICIOUS

PDF

71.6 KB Created: 2021-12-08 19:01:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 3fde87b212861959cca0b2e6910118bd SHA-1: 2b86f732484aecd254cc252678b1450342a5d730 SHA-256: 552f27d89697bab4c39df93d205e432d70b85040c0f28d541f48459d641d4c22
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://www.alborada.es/ckfinder/userfiles/files/nujukubuxovofexun.pdf In PDF document text
    • http://chinalabware.es/d/files/26954036672.pdfIn PDF document text
    • http://mbeautyconcept.com/upload/content_images/file/dedogozevaranoworebati.pdfIn PDF document text
    • http://prompol.com/media/file/sovawixaguvidud.pdfIn PDF document text
    • http://studio-castiglioni.com/userfiles/files/gutusakolup.pdfIn PDF document text
    • http://numere-mopede.ro/mm/file/74145394672.pdfIn PDF document text
    • http://kashima.cc/userfiles/file/dewapewidezunomega.pdfIn PDF document text
    • http://bebegim.nl/userfiles/file/pozusexexapodupubu.pdfIn PDF document text
    • http://huynhgiabaohotel.com/uploads/FCK/file/81394740627.pdfIn PDF document text
    • http://autoscuolepintozzi.it/userfiles/files/36672518653.pdfIn PDF document text
    • https://hoya.hr/UserFiles/file/71760442131.pdfIn PDF document text
    • https://agri-mal.pl/userfiles/file/4297954762.pdfIn PDF document text
    • http://seowonbattery.com/files/fckeditor/file/70726604614b77cdad900.pdfIn PDF document text
    • http://whuntex.info/userfiles/file/85707600150.pdfIn PDF document text
    • https://fontan-montag.ru/img/upload/limupe.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/9000228247.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/5rqt8uq5ku5m66bi6fl1trt4g6/55783476102.pdfIn PDF document text
    • https://kenkochaya.com/user_data/ckfinder/files/59577728850.pdfIn PDF document text
    • http://ilyxrace.com/userfiles/files/31393446272.pdfIn PDF document text
    • https://www.colline-eternelle.com/ckfinder/userfiles/files/vabidumupage.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614be20628e68---dubovuxewanakunegoli.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/161968482d2a23---83016307395.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1618f3176ca6c2---13987446774.pdfIn PDF document text
    • http://vdadanang.vn/app/webroot/assets/files/6314983207.pdfIn PDF document text
    • http://pelejas.com/IMAGENS/CKFINDER/files/besileji.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/4dZi1sgP-vI/uplcv?utm_term=basic+science+for+primary+2+pdfPDF 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_off0000b25b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b25b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b25b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB25B 10924 bytes
SHA-256: 996f28993d40eed098a127a5b3cdaecb7aac559471c0a2bb3fc8de89b1a102ae
font_01_sfnt_off0000cbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBC 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0000e25b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25B 18152 bytes
SHA-256: 3b1a2eb11059063e1e1f2222aec1c96e31d2a643217e6333b50b18bb66a2712d