Malicious PDF — malware analysis report

Static analysis result for SHA-256 425dda86867856bf…

MALICIOUS

PDF

80.8 KB Created: 2021-10-05 18:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: d9c1413387b6d034f35dcf4d8ce8e84d SHA-1: aca82ee0fabd756337944ea641400a6e331a9b02 SHA-256: 425dda86867856bf4a3c84eb146399530566ee7659d713dc47ce19cc9a7b0312
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://synerhu.ru/uplcv?utm_term=120+divided+by+4 PDF link annotation
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615aab97dfbdc---87046902993.pdfIn PDF document text
    • https://www.bbmnetlicitacoes.com.br/cms/ckfinder/upload/files/vaperemapadisoxugapime.pdfIn PDF document text
    • http://indecomavo.pl/userimg/inc/jubipakope.pdfIn PDF document text
    • http://stellar-toys.com/ckfinder/userfiles/files/xifepanudet.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/legupidiwenomevezojijabax.pdfIn PDF document text
    • https://www.sonorisation-auxerre.fr/ckfinder/userfiles/files/xatezirudeneloredu.pdfIn PDF document text
    • https://suacuachuyennghiep.com/uploads/files/gejatiduli.pdfIn PDF document text
    • https://sadex.pl/fck/file/karurokikanuxajizogo.pdfIn PDF document text
    • http://maintenancebazaar.com/userfiles/file/68682080015.pdfIn PDF document text
    • http://brickchamber.com/ckfinder/userfiles/files/20066824808.pdfIn PDF document text
    • http://zjqzzx.com/uploadfile/file/2021100315165473499.pdfIn PDF document text
    • https://bearings.vn/images/ckeditor/files/genomewegewumok.pdfIn PDF document text
    • http://laibros.com/ckeditor/userfiles/files/vozorizizewinipatekotexe.pdfIn PDF document text
    • http://sherwoodchambergolf.org/ckfinder/userfiles/files/88650844504.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1615a2d5cd1271---63409167781.pdfIn PDF document text
    • https://telechips.com/ckfinder/userfiles/files/12496997454.pdfIn PDF document text
    • http://eko-baby.ru/userfiles/file/63467982510.pdfIn PDF document text
    • http://arucax.am/user_images/file/geladibokopixoto.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/on03kogm00q7t62cvgvqhq8ao1/maputa.pdfIn PDF document text
    • https://moiatakashta.com/userfiles/file/nogenakafuxewiv.pdfIn PDF document text
    • http://psn-monolit.ru/img_file/files/26114366714.pdfIn PDF document text
    • http://acril.ru/ufiles/files/43180265866.pdfIn PDF document text
    • http://hondatayho.top/img-ngocbao/files/fenamikujuzugubapenunuma.pdfIn PDF document text
    • http://leaders-adv.net/userfiles/file/26774619210.pdfIn PDF document text
    • http://ats-dz.com/userfiles/file/zuwuruzupibimobosid.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_off0000d707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD707 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF19 18096 bytes
SHA-256: eda37f256bd9f9da3961eeb1c06d483fb1147f1e1c7ddfbd3b60c6c349c96af9
font_02_sfnt_off00011ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF1 10040 bytes
SHA-256: 6e52b1eaa19e355a95a4ee0915369fd72bafb05bb37ccb733f17370fda28a93a