Malicious PDF — malware analysis report

Static analysis result for SHA-256 445abc0daaf32a88…

MALICIOUS

PDF

83.1 KB Created: 2021-10-08 23:23:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-11
MD5: 7d102cbc9c7ada402e0d973d91846d22 SHA-1: 4cf02a73b5b85e6605e3e791e55892397f46d6ff SHA-256: 445abc0daaf32a88bbbe55f883c6d40faff5f2f8726ca146a8546683801a61ee
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://medvor.ru/uplcv?utm_term=snow+seed+minecraft+ps4 PDF link annotation
    • http://spbi.cz/res/file/42499151007.pdfIn PDF document text
    • https://dorfadvertising.com/ckfinder/userfiles/files/91748452481.pdfIn PDF document text
    • https://33mobility.net/uploads/files/77614404978.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/dc56ab1b4f48b2e14b906160ce82d148/27939226285.pdfIn PDF document text
    • https://fruitssupplier.com/app/webroot/img/files/vufixirem.pdfIn PDF document text
    • https://bushregenerators.com/userfiles/files/talategeberi.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/29661838676.pdfIn PDF document text
    • https://10playsolutions.com/clients/softklk/documents/_articles_/file/79076357785.pdfIn PDF document text
    • https://equalland.com/uploads/File/69013769540.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/3ugo6sdr4pd9nic746d6f9dst7/nakokosagamuzox.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614840d7dd03e---82485732439.pdfIn PDF document text
    • https://torbay.ru/images/uploads/file/29030309969.pdfIn PDF document text
    • http://e-restauracion.com/app/webroot/files/uploads/files/99609100071.pdfIn PDF document text
    • https://qeyeoptical.com/ckeditor/ckfinder/userfiles/files/tekotugobu.pdfIn PDF document text
    • http://checopharma.com/upload/files/rexogemunenikobusup.pdfIn PDF document text
    • http://deforma.it/userfiles/files/barajobozulofomekizonin.pdfIn PDF document text
    • http://balashixa.inhome360.ru/admin/ckfinder/userfiles/files/revebalejegitulixim.pdfIn PDF document text
    • http://enjoybowlramenandpoke.com/uploads/files/xukomarakipurisisuvige.pdfIn PDF document text
    • http://onlinemidias.com/ckfinder/userfiles/files/gamum.pdfIn PDF document text
    • http://hoangnampte.vn/quangbasanpham/app/webroot/upload/image/files/zifogimebafox.pdfIn PDF document text
    • http://giadinhmedia.com/uploads/files/nisedasuposalilorefipet.pdfIn PDF document text
    • http://chieucoingason.vn/files/nanasunexibobabotafifi.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/161436db2be029---lujisujanina.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_off0000dd8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8D 10976 bytes
SHA-256: 9edce093df024f7a719956926fbe7c93420220aed976945f4ff33ca7dd1c02d9
font_01_sfnt_off0000f71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F31 18200 bytes
SHA-256: e812d5fccbfc275b7a6eefe47fdb4176b071ba6ad5be1a19e8f18ce30530358b