Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4fd109a1b936f6…

MALICIOUS

PDF

80.7 KB Created: 2022-04-25 17:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 68f9a21ac4010bb713892dec0a6643a4 SHA-1: 043ccb56002e190b5abd844b83ecae98457b80be SHA-256: de4fd109a1b936f649f3c1ec91d4a99e1ced5ceeb76cc4bf996283fd008f9499
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://yubit.co.za/YmrXLWy8?keyword=ikea%20white%20metal%20bed%20frame%20king PDF link annotation
    • https://nuzubalud.weebly.com/uploads/1/3/4/1/134108962/zorezozavojuxa.pdfIn PDF document text
    • https://adravto.ru/uploads/gallery/files/40852440914.pdfIn PDF document text
    • https://netcsemege.elelmiszer-hazhozszallitas.hu/ckfinder/userfiles/files/93038251983.pdfIn PDF document text
    • https://fabriziochessa.it/userfiles/file/zipizujekosaxelemam.pdfIn PDF document text
    • http://paramountswimwear.com/userfiles/files/8808561091.pdfIn PDF document text
    • http://pachinko-seminar.com/sites/default/files/file/titatupetojolujiga.pdfIn PDF document text
    • http://amst-cn.com/userfiles/file///22022286456.pdfIn PDF document text
    • https://vigakamodibit.weebly.com/uploads/1/3/4/7/134770941/1cf02b.pdfIn PDF document text
    • http://otestmanager.com/club/data/userfiles/file/20220326030915.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/4c5a67a40f457c9ac803ed6d72d7c289/50400993892.pdfIn PDF document text
    • https://r4binsh4h9-att.com/contents/files/lupewolira.pdfIn PDF document text
    • https://bozajeja.weebly.com/uploads/1/3/6/0/136082115/kikinevigepato.pdfIn PDF document text
    • http://tdbm.vn/upload/files/44831776056.pdfIn PDF document text
    • https://aildf.in/userfiles/file/negaxuzapol.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1623c625fde99d---xidetudolun.pdfIn PDF document text
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/f5473deb944efd3618f6423a7c21ce18/gesukafalukanasetekuxoju.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16222dd28f3c0a---mitozufafaxelerodatumivuf.pdfIn PDF document text
    • https://www.veskom-slovakia.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/vazuvop.pdfIn PDF document text
    • https://nunajamedagafep.weebly.com/uploads/1/3/5/3/135325778/laxujo.pdfIn PDF document text
    • http://neza.cz/UserFiles/File/mutixazo.pdfIn PDF document text
    • https://zideloxilatomi.weebly.com/uploads/1/3/5/3/135325243/1575151.pdfIn PDF document text
    • https://kenivefu.weebly.com/uploads/1/3/4/7/134715486/823f33.pdfIn PDF document text
    • https://kpk.1c.ru/admin/rc/ckeditor/kcfinder/upload/files/84350524919.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_off0000da63.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000da63.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA63 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF275 16192 bytes
SHA-256: 3b17150ba7de50f11a733824149bbfe71df372bbb7db2e6e22962f935ec71fe5
font_02_sfnt_off00011c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C41 10784 bytes
SHA-256: 0d0d86e21b7dd6654eb9d717757e39c0758b2bc3bb212d50773e055caa9ad5ef