Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2cacd66609a059…

MALICIOUS

PDF

83.1 KB Created: 2021-10-07 06:06:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 797b13a6ec347445de8124be60d158c5 SHA-1: 5e43d7ad5c613092d077cc278b46083b50e8d8e3 SHA-256: af2cacd66609a059cb435b38ed81952c19bbc3a6a272cc260f4ebe9b2d9eeb81
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://inwebjor.ru/uplcv?utm_term=look+through+definition PDF link annotation
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/qeshj87c1vko2iqi8s1t0f2pu0/35897578079.pdfIn PDF document text
    • http://25630638.kad.tw/kads/ckfinder/userfiles/files/pokino.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615e330f73fc6---74512985284.pdfIn PDF document text
    • http://dongbanja.com/userData/ebizro_board/file/39376705005.pdfIn PDF document text
    • http://ziconiavip.com/uploadfck/file/11138501862.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/313f053651ed68138d46a400dcb23559/55010061441.pdfIn PDF document text
    • https://ppuhperspektywa.pl/files/edytor/file/80884419341.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f023c85e5b---murogiw.pdfIn PDF document text
    • https://emenu.hu/editor_up/13031855444.pdfIn PDF document text
    • http://ap116.ru/userfiles/file/papuxig.pdfIn PDF document text
    • https://777mto.com/contents/files/16419078521.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/b92d078c9c6578fbfcf877a913c6833d/61141101609.pdfIn PDF document text
    • http://tungalag.mn/userfiles/files/85789357416.pdfIn PDF document text
    • https://branchennachweis.eu/userfiles/file/maligoxe.pdfIn PDF document text
    • http://positiveforce.in/uploads/files/3175312468.pdfIn PDF document text
    • https://bloomlight.pl/_bloom/file/suzibatiwodupedam.pdfIn PDF document text
    • http://asustainable.com/global/file/60686142196.pdfIn PDF document text
    • http://zzquansu.cn/d/files/14676363726.pdfIn PDF document text
    • http://konikanarrowfab.com/ckfinder/userfiles/files/47914020772.pdfIn PDF document text
    • http://elturo.ru/img/upload/files/47228314082.pdfIn PDF document text
    • https://carrieres-pierre.com/userfiles/file/9719332072.pdfIn PDF document text
    • https://hglobaltourb2c.com/FileData/ckfinder/files/20211007_CDA2D34DB98D42D0.pdfIn PDF document text
    • http://luijkzonwering.nl/image/file/bowixiduzuf.pdfIn PDF document text
    • http://internet-trade.eu/UserFiles/file/zoperuvutuwanavanogid.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 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_off0000d968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD968 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f17f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17F 10404 bytes
SHA-256: f5bc3bf54e8dae4e091752f1f070037ca4c291c0ba79b5278231dd2902c7b8da
font_02_sfnt_off000108ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108CA 21008 bytes
SHA-256: 7269ab773d7c3b1ef9a5acfea029e63c4f060240d926001567148548ba25ed48