Malicious PDF — malware analysis report

Static analysis result for SHA-256 4251f02b981e7052…

MALICIOUS

PDF

94.4 KB Created: 2021-06-11 04:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 1e598aca1902d80acfca83dc3e4384b6 SHA-1: 4dad830ae63d0a91095716a4bef4cd0e4b101ba3 SHA-256: 4251f02b981e7052b9a299ceeac82877bc61dc4ab234c60809cfcede617022ef
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crysiq.ru/uplcv?utm_term=bolly4u+veer+zaara PDF link annotation
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/fli6pvq5u0j77kr6u40ga01ct9/josurumawipetewodebikulaw.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/60c97c0d496f1aadef168dff02f3c96c/42242885503.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8a9f09624---72698184025.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/cec218c0f2a47005e945da95bc4e8f03/nuzekakir.pdfIn PDF document text
    • https://afayl.com/userfiles/file/meterasejasomoxum.pdfIn PDF document text
    • http://ukrainski-rosyjski.pl/userfiles/file/fokuba.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/sovufojituxakipotogaso.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/41777459714.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160775cdcb0849---kuvukakajezurapone.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/matolojojufamugusipu.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609482788f926---sazojagekesejujexe.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/sjl3rkabgmaj89gf4vlqlhl02a/pisitisawuxutemamibenigi.pdfIn PDF document text
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/1de044593bea823af49a1fee0546d51c/17334281852.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609f093c384ac---zogijerupemudevupok.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/24025545919.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/c665349b3caab841ed6c2e8987b18a0c/dunajurojomapixifikoxizo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF331 6744 bytes
SHA-256: 0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
font_01_sfnt_off00010418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10418 4848 bytes
SHA-256: 114d370740c52c69da289fd15cc6f7ac9659a3247fbc26234cbc9da74cb6167f
font_02_sfnt_off000114ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114BA 2252 bytes
SHA-256: a6a8686b8fb15c9717d15c6992f5cb6599fab98c9eb18a738509255b94a7d84e
font_03_sfnt_off00011efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EFA 11392 bytes
SHA-256: b38a857e8a63ee620e9ed94fe4d4c1173d2b79799afb69abcb90baa56eb86267
font_04_sfnt_off000145c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145C7 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
font_05_sfnt_off00015ada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15ADA 6152 bytes
SHA-256: 04b2536f6cffb7b921eed65314c1d275b874ba6953b6b668a07e57fab6acc528