Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4be8d28d39930d…

MALICIOUS

PDF

108.1 KB Created: 2022-03-30 08:52:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-03
MD5: c9ea740a8d2311e4d38d2b529a60ceb7 SHA-1: 3fb7bcb0bc89899181895fb1aed8d83a01c4c1f9 SHA-256: de4be8d28d39930d949d40caefc14bf5151ea369314bac47e5ec658267c898fd
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://lovig.co.za/YmrXLWy8?keyword=enduring%20word%20bible%20commentary%20david%20guzik PDF link annotation
    • http://www.yoko-ono.be/images/userfiles/file/gesow.pdfIn PDF document text
    • https://kuzimedunadaweg.weebly.com/uploads/1/3/5/9/135993385/06633f.pdfIn PDF document text
    • http://iuoooo.com/filespath/files/20220215225257.pdfIn PDF document text
    • https://nisudine.weebly.com/uploads/1/3/1/4/131454656/d8378d0cb2420.pdfIn PDF document text
    • https://febrerasesores.com/uploads/kcfinder/upload/files/kezupux.pdfIn PDF document text
    • https://so-photo.hu/images/fck/files/tubiwur.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16205a416d06c4---zunedonifovemiti.pdfIn PDF document text
    • http://zeguvietnam.com/uploads/ckfinder/files/mujolabupokalopevano.pdfIn PDF document text
    • https://hhwholesaleclub.com/admin/kcfinder/upload/files/59569152396.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/e0ce76610182ff4cdfa2c82489a9cab5/45400312869.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/5b761d63407a51ec46789f44046fc101/vetut.pdfIn PDF document text
    • https://timodidub.weebly.com/uploads/1/3/1/3/131379596/vazolulawujaxit.pdfIn PDF document text
    • https://funstoreus.dialog.org/userfiles/file/gejikaridunonalab.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/dipuwumozusuwusewumadid.pdfIn PDF document text
    • http://psychologyforeverybody.com/ckfinder/userfiles/files/zisuzivawosebesebi.pdfIn PDF document text
    • https://zawuziwoju.weebly.com/uploads/1/3/1/6/131636930/tozusud_numari_lizukum_jawejerolar.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16216d4fdde530---nigedimaji.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/7fdac0d190c8ed32d42df953161dfdb3/51519775721.pdfIn PDF document text
    • https://sisajubiji.weebly.com/uploads/1/3/0/9/130969075/a69f5edb19.pdfIn PDF document text
    • http://irollee.com/userfiles/file/74140316768.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_off000143bb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000143bb.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000143bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143BB 17496 bytes
SHA-256: 3d08243aed7cba1c36fd295a29c3a027d0e3e638fe761af88c245288198fa375
font_01_sfnt_off0001711c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1711C 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000187c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x187C0 11188 bytes
SHA-256: 9c089c1e7ae2aa6f655960a3f7c3dfe4f3feafdd7f2893d2ed8450919674f96c