Malicious PDF — malware analysis report

Static analysis result for SHA-256 e971a796f1215244…

MALICIOUS

PDF

79.1 KB Created: 2021-03-29 18:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 35340b7b9f9dcc13180d6dc09e2c8230 SHA-1: dc1379456f3aceb7dc56bec6220a708c0bd4dcd3 SHA-256: e971a796f1215244ab55383436445adf1b336acb2ba7d3b2b1cd944973b36317
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious by ML models and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic to drive traffic to potentially malicious sites. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of embedded URLs points towards an attempt to redirect users to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/award?keyword=blender+guru+shortcut+keys+pdf PDF link annotation
    • https://cdn.sqhk.co/jaxugaveg/OhcMcha/idle_landmark_tycoon_mod_apk_unlimited_money.pdfIn PDF document text
    • https://jotulamopusojo.weebly.com/uploads/1/3/4/4/134465369/f52250.pdfIn PDF document text
    • https://cdn.sqhk.co/fezuvepere/iKjaeih/bescherelle_conjugaison_espagnol_gratuit.pdfIn PDF document text
    • http://tawaguf.scienceontheweb.net/fisofijorujalapa.pdfIn PDF document text
    • https://kufuzuve.weebly.com/uploads/1/3/4/5/134589172/7850167.pdfIn PDF document text
    • https://cdn.sqhk.co/rokunufoleti/hbnt2nM/ocotillo_golf_course_map.pdfIn PDF document text
    • https://fasuwilobavofe.weebly.com/uploads/1/3/4/4/134489762/dasovav-vuxabojowow.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/37874589874.pdfIn PDF document text
    • https://sedogosep.weebly.com/uploads/1/3/4/4/134486754/2274878.pdfIn PDF document text
    • https://cdn.sqhk.co/fijumirana/aZ3jaY4/free_download_idle_car_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dediwifime/F9we3ig/casino_theme_birthday_cake_ideas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2d2b1dae-c014-4902-97e6-c3f1d56915cd.filesusr.com/ugd/70e5f7_f6b36a46784e4e7a89c9c3ea345568b2.pdf?index=trueIn PDF document text
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_e3197c227f2b4a41ac1daa89763342c6.pdf?index=trueIn PDF document text
    • https://e9542b43-fb79-4c62-94a9-c66526381fce.filesusr.com/ugd/4142f3_c7b7133ecb7d420ebc15db50b72600f4.pdf?index=trueIn PDF document text
    • http://nukilaba.myartsonline.com/95904717967.pdfIn PDF document text
    • https://9de673a2-3b8e-40eb-bbf5-c0ad8e71a3da.filesusr.com/ugd/bd5c68_40a13f7875dd42528b483c0f8cc72d1c.pdf?index=trueIn PDF document text
    • https://9e6c4f0b-3406-4274-bf8a-5be7f948d240.filesusr.com/ugd/45c6ff_739b74f8fb2a47fcb1bb094873894cd3.pdf?index=trueIn PDF document text
    • https://98748e4b-3258-471a-903e-8ea98415cca0.filesusr.com/ugd/fd7405_2e852b3b8272485ca84ece3254d06ea7.pdf?index=trueIn PDF document text
    • https://72be5e1b-4d14-4335-96ee-88463f604c48.filesusr.com/ugd/57ecfe_d70ffcf7801a4b718cff8f65823c72c2.pdf?index=trueIn PDF document text
    • https://56a7be67-7dca-40da-a973-69ad719fb73b.filesusr.com/ugd/fedf23_54335754c9474a1e9db137ab224fdd98.pdf?index=trueIn PDF document text
    • https://cf176ec6-4820-456b-adf9-61e5f06c968f.filesusr.com/ugd/43d598_c187e4a764704db99d846be3a8383382.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC08 5420 bytes
SHA-256: 452a961d651a9daaa3135fdf29702a82db6a358267e5c35512de9511ea365829
font_01_sfnt_off0000fe7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7A 1728 bytes
SHA-256: d165ae4d83dd613087195bf72709767423eba952415580ff8d315dee306433fc
font_02_sfnt_off00010715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10715 11712 bytes
SHA-256: 024263665282f1a89732389ae0e481f2129f0bba12ec5885e7cc198b3f5ca289