Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e31bd42bbb8dcc2…

MALICIOUS

PDF

236.9 KB Created: 2022-01-21 20:55:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 9897213e4da69e2b7d61af0bbe2f16b1 SHA-1: e0ef7670de6b9fa39cee0a0bf7a8358133c5e857 SHA-256: 4e31bd42bbb8dcc20d01dcdb9156ceeb99318873178be81c17755fe1b2e04d95
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8191

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 https://www.shipgo17.com/plugin/ckeditor/ckfinder/userfiles/files/80859015381.pdf In PDF document text
    • http://wych123.com/upload/files/deximok.pdfIn PDF document text
    • http://eegbiofeedback-leszno.pl/userfiles/file/13079848566.pdfIn PDF document text
    • http://gugugroup.com/userfiles/mopozegiledanalado.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/bdaf5e8dc36db84db5668e74c62205d1/23605016762.pdfIn PDF document text
    • https://alwillislifecenter.org/ckfinder/userfiles/files/94853693153.pdfIn PDF document text
    • http://kes.org/upload/editor/files/1218583487.pdfIn PDF document text
    • http://sladkiy-ostrov.ru/userfiles/files/pukopojopufifefuwajowawi.pdfIn PDF document text
    • http://elsped.hu/files/file/tusajapiful.pdfIn PDF document text
    • http://www.niceresidence.net/image/upload/File/furuvifote.pdfIn PDF document text
    • http://condosworld.com/abisol1/userfiles/files/62435130891.pdfIn PDF document text
    • http://bolyai-gyermekotthon.hu/files/files/73670873012.pdfIn PDF document text
    • http://fzsvybbs.at/userfiles/file/puzisomedaxenuke.pdfIn PDF document text
    • https://hanyauntuktesting.com/contents/files/nipuvuriguzu.pdfIn PDF document text
    • http://teresachild.com/upload/files/giwipibowaxuminazo.pdfIn PDF document text
    • http://starinviter.com/ckimagefiles/welegurujarek.pdfIn PDF document text
    • http://litho-and-co.fr/ckeditor/upload/files/260704675.pdfIn PDF document text
    • http://tivatijapan.com/uploads/userfiles/file/vupuzapem.pdfIn PDF document text
    • http://global-leasing-management.com/uf/file/jeturunavimin.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/qc01vuqn6k2dc2fe0balqds5vq/78082919756.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/18228569066.pdfIn PDF document text
    • https://ijtm.in/userfiles/file/karabi.pdfIn PDF document text
    • https://www.nissan-utilitaires-melun.fr/ckfinder/userfiles/files/xiwifoxapasibu.pdfIn PDF document text
    • http://www.schule.havonix.com/ckfinder/userfiles/files/rojimipeketuf.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/e80929dbe62b56e27d86cc29dd59b0cc/41083630911.pdfIn PDF document text
    • https://satuldelut.ro/ckfinder/userfiles/files/78321677039.pdfIn PDF document text
    • https://dammesliepas.lv/ckfinder/userfiles/files/mojevi.pdfIn PDF document text
    • http://parzenica-bialka.pl/userfiles/files/68128243427.pdfIn PDF document text
    • http://tythb.com/uploadfile/files/49299084795.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/5bhJmFgkeCE/uplcv?utm_term=windows+vista+bootable+iso+imagePDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000349e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x349E0 10776 bytes
SHA-256: 2b4296a07285330bbf42d6f5016c8d1712395e095353ae314aae009d0cdfd7a7
font_01_sfnt_off00036280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36280 16668 bytes
SHA-256: 49c03d872d0a44fe6a131aa2e30aa08df3da4c0cd5d3a0fa36deea202604142a
font_02_sfnt_off00038db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38DB9 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336