Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ad28a8130fcad4…

MALICIOUS

PDF

182.9 KB Created: 2022-02-27 08:01:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: a9956325884d37c2736f8302bd99bddd SHA-1: 31a2892b6dd752d76892c52e08a6d5b8c417ab02 SHA-256: 18ad28a8130fcad4b36a33f79d4cbe41f1c100cfd2363d13a044589a2df090c1
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7590

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://wirut.co.za/XSRYdR1H?utm_term=cnnmoney+premarket+report PDF link annotation
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/74850069413.pdfIn PDF document text
    • http://yilbasipromosyonu.com/userfiles/file/83337095658.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/40826011413.pdfIn PDF document text
    • http://familie-schiecke.de/images/file/45141522477.pdfIn PDF document text
    • http://apvn.info/userfiles/file/7417107648.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/8750c631d4d721087211dd3d5a591e81/78248651544.pdfIn PDF document text
    • http://hzosm.com/images/upload/File/dobiladutipidijumuf.pdfIn PDF document text
    • https://alzubidi.com/userfiles/files/bimobabonawavuwukaxel.pdfIn PDF document text
    • http://spreewaldpension-luebben.de/meineBilderAlbertGrundschule/file/zixalemitotakeguxevenagen.pdfIn PDF document text
    • http://dobermanncz.eu/files/jajuvurupi.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/16164962a0d15c---16352936354.pdfIn PDF document text
    • http://benhvienlaptop.biz/userfiles/file/suderagadokeboze.pdfIn PDF document text
    • https://rt-totaalafbouw.nl/userfiles/file/siwonogabelelaxupi.pdfIn PDF document text
    • http://thanhcongtechtra.com/upload/files/mepevelasurewisibakuve.pdfIn PDF document text
    • http://bjjiffy.com/upload/73933231581.pdfIn PDF document text
    • http://geotersrl.it/file/fejunenanipusomumalok.pdfIn PDF document text
    • https://digireg.lu/upload/70517532632.pdfIn PDF document text
    • http://sncelamel-dz.com/app/webroot/assets/js/kcfinder/upload/files/86137517280.pdfIn PDF document text
    • http://lechioutdoor.com/userfiles/file/85267067311.pdfIn PDF document text
    • https://totounited.com/contents/files/3159765266.pdfIn PDF document text
    • https://barcelonacentromedico.es/files/galeria/files/47947202188.pdfIn PDF document text
    • http://ibookingkr.com/FileData/ckfinder/files/20210815_46A521DDB761CC88.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1614030fe35f66---vabavudugukudofitezosezi.pdfIn PDF document text
    • https://schmitz.cz/res/file/tekujemeti.pdfIn PDF document text
    • https://motecx.com/images/file/kitonujerufelogumejogi.pdfIn PDF document text
    • http://gpp300.fr/userfiles/file/320900190.pdfIn PDF document text
    • http://www.saveurspoitoucharentes.com/admin/ckfinder/userfiles/files/weratiterewufu.pdfIn PDF document text
    • http://hit-air.pro/ckfinder/userfiles/files/1771356241.pdfIn PDF document text
    • https://pk-kuepfer.ch/ckfinder/userfiles/files/ronugisajosozade.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/161cf560d7971a---wigiwilimozofenenifeji.pdfIn PDF document text
    • 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_off00026fbb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00026fbb.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00026fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26FBB 10344 bytes
SHA-256: 495c03deb7b38ef25b019122312d997e9af92e873816e2effa970134bb5f5bc9
font_01_sfnt_off00028719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28719 17140 bytes
SHA-256: 6fbf9fa4e193193827e8e5b430db5bfb68f592f56ee75c8665dcbc7dda8eea73
font_02_sfnt_off0002b3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B3C9 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9