Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d85ef6153d778c2…

MALICIOUS

PDF

80.3 KB Created: 2021-10-21 06:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: a30466f4283892e916a20eca004abaf1 SHA-1: cc01fda16c290524596dd5e2e2fb7535eebd400a SHA-256: 5d85ef6153d778c2d09ffa35c4e190e16a8d8e31450eff0c8610802e92cfd458
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://krisoc.ru/uplcv?utm_term=tamil+devotional+songs+mp3+download PDF link annotation
    • https://sokolzgierz.pl/web/uploads/files/rufimesoridifane.pdfIn PDF document text
    • https://0a3exp.com/upfiles/editor/files/pumefifebutosewezunan.pdfIn PDF document text
    • https://placute-frana-dispaco.dispaco.ro/userfiles/file/sadin.pdfIn PDF document text
    • http://varadimasszazs.hu/uploads/files/talazilemi.pdfIn PDF document text
    • https://eldorado777.ro/upload/editor/file/90815994911.pdfIn PDF document text
    • http://ontis.sk/editor_uploads/system/files/68879700630.pdfIn PDF document text
    • http://ags-sib.ru/ckfinder/userfiles/files/rimefoxipi.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/16167e6dc5342f---vagikudovegobaxadodenig.pdfIn PDF document text
    • http://www.egavilanes.com/ckfinder/userfiles/files/lifudesarakubewuvumisamu.pdfIn PDF document text
    • https://ipekyolumedya.com/resim_galeri/file/gudabo.pdfIn PDF document text
    • http://immobilieninvestors.de/userfiles/file/75665088569.pdfIn PDF document text
    • http://slabowidzacy.smprzemysl.pl/ckfinder/userfiles/files/58913152659.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1613e62dda6e4c---53555924626.pdfIn PDF document text
    • http://alotercuman.com/ckfinder/userfiles/files/rupefe.pdfIn PDF document text
    • http://alacartedesign.de/userfiles/file/koneparokidadepo.pdfIn PDF document text
    • http://kleni.cz/userfiles/file/93384345334.pdfIn PDF document text
    • https://maria-galland.ru/files/file/sesibinuv.pdfIn PDF document text
    • http://lltsg.com/uploadfile/file///2021092523571225.pdfIn PDF document text
    • http://pincesorvarshop.hu/editor_up/tudiguxarinuladovuki.pdfIn PDF document text
    • http://baohanhranghm.com/upload/img/files/likufijeni.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/f57ec4b667113a7bb675dbe684f88677/42982588052.pdfIn PDF document text
    • http://ke-sen.com/userfiles/file/1631065610.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/28028933997.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_off0000d39f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39F 10924 bytes
SHA-256: 8148003ebaacb7d484f8f55718c8874bf414b5fef0fdc82e64ef6cb8af6fa949
font_01_sfnt_off0000ecc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC2 17952 bytes
SHA-256: 5abb1b0e655a8d23ec0a5731b0be9be1b4abfe71be1492fee2bd5709cf9e573b
font_02_sfnt_off00011bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BBB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1