Malicious PDF — malware analysis report

Static analysis result for SHA-256 552fbf7b7ef323f8…

MALICIOUS

PDF

84.7 KB Created: 2022-03-19 05:56:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 7ffef5f58191136499126917a58d8e78 SHA-1: 54fbe1e72801bf1891f3e261b7b970c2de0f948e SHA-256: 552fbf7b7ef323f86120e16e11ec1b089275ee2f98646f98efd48d0a1650c97e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9861

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://wib24-admin.de/uploads/file/niripijemixuzogevaw.pdf In PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/zitutorosadidomito.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/632d0afca0277422f57164f84ca8de11/81462698084.pdfIn PDF document text
    • https://nestsearch.in/admin/uploads/file/62479154672.pdfIn PDF document text
    • http://adm-zhemtala.ru/files/files/zevaxilemopuruwalojuwa.pdfIn PDF document text
    • https://robalton.es/Albums/images/file///xusewunizibelidukakaw.pdfIn PDF document text
    • https://dorfadvertising.com/ckfinder/userfiles/files/14771719719.pdfIn PDF document text
    • https://beautyyaurient.com/editor_upload/file/86570544881.pdfIn PDF document text
    • http://metaphorcreators.com/kcfinder/upload/files/84502040545.pdfIn PDF document text
    • http://fese.in/ienupdimages/images/files/78789579916.pdfIn PDF document text
    • http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/67245351628.pdfIn PDF document text
    • https://aristi-trap.com/upload/users/files/98709931333.pdfIn PDF document text
    • https://www.adamtraveljordan-ru.com/mypanel/includes/ckeditor/kcfinder/upload/files/97664274120.pdfIn PDF document text
    • http://fatename.com/uploads/files/202202041950103934.pdfIn PDF document text
    • http://kutyakozmetikustanfolyam.hu/kcfinder/upload/files/nifusagofoxugetogavuvudil.pdfIn PDF document text
    • https://mysilofr.mysilo.com/upload/ckfinder/files/maruwawudaduziw.pdfIn PDF document text
    • http://www.americandartsmadrid.com/kcfinder/upload/files/pukozuririfuxi.pdfIn PDF document text
    • http://sql110.com/pic/mawofajolikofarizowi.pdfIn PDF document text
    • http://vietcem.vn/public/default/ckeditor/files/28175212165.pdfIn PDF document text
    • http://jinsonmetal.com/Upload/file/15325570472.pdfIn PDF document text
    • http://nature-revive.org/files/file/95879274061.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1622dda14acc0e---38604775327.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/giwevemulebiro.pdfIn PDF document text
    • http://ceu-jgh.org/kcfinder/upload/files/12476713212.pdfIn PDF document text
    • http://vit-physio.de/file/58242404024.pdfIn PDF document text
    • https://iuoshili.com/upload/users/files/kutagegojinijag.pdfIn PDF document text
    • https://unitedfightalliance.com/ckfinder/userfiles/files/77927556645.pdfIn PDF document text
    • http://hardevel.com/data/files/turirorokujavizebituf.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/8r1uieb7do0ipoo31r3s3ohga6/13264103787.pdfIn PDF document text
    • http://vssteel1999.com/ckeditor/userfiles/files/70460022970.pdfIn PDF document text
    • http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/20992816167.pdfIn PDF document text
    • https://balatonpremiumvillas.hu/webroot/upload/files/jefipunusum.pdfIn PDF document text
    • http://doo-san.com/userfiles/file/20220218144344.pdfIn PDF document text
    • https://agefrance.thpservices.com/documentos/file/45092172936.pdfIn PDF document text
    • http://change4best.ru/upload/file/daroromuvewofumakuvolujo.pdfIn PDF document text
    • http://filipdegreef.be/uploads/files/76059301110.pdfIn PDF document text
    • https://companydemo.opusviewdev.com/app/webroot/js/image/files/mixuwanedagawutiwo.pdfIn PDF document text
    • https://prospr.fr/ckfinder/userfiles/files/wemapetopaloxajugikap.pdfIn PDF document text
    • https://colod.co.za/XSRYdR1H?utm_term=jelet+2018+answer+key+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_off0000dcf4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000dcf4.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF4 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0000f40f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40F 19808 bytes
SHA-256: d9a8e9550bf5619394c100190f70a6cd0157a0b3681885ce1ccafa2a11ea4ac2
font_02_sfnt_off000127e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127E3 11064 bytes
SHA-256: e4f779701d7c2f01edf5fc05c26551ab8a70d6d5a28f28f9ad7fc1a61f4d8100