Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba81a15e8bb6ee3…

MALICIOUS

PDF

70.4 KB Created: 2021-02-15 03:28:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e21d72204820ab62d5b7d79aa81641ba SHA-1: b7c34c93e909f7ff09d5458d8f41f835a45af685 SHA-256: 4ba81a15e8bb6ee3f77f729a323acb4a52f4f7e7fc627cd206edf8b3959724d6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wb?keyword=excel%20vlookup%20from%20another%20sheet%20example PDF link annotation
    • http://artyom.guru/9235223659085nr.pdfIn PDF document text
    • http://islta.fun/609957619888cq5j.pdfIn PDF document text
    • https://cdn.sqhk.co/sarunasol/jR0jghc/vodifupuvafol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492250/normal_5ffbc50e4d3c6.pdfIn PDF document text
    • http://siankaanmexico.com/35153346047qpl43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490754/normal_5fdf20d68b97d.pdfIn PDF document text
    • http://copyrightsupporteds.com/kong_skull_island_vs_godzilla_size_comparisonnya7u.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/267132307779nct1.pdfIn PDF document text
    • http://it50discount.pro/dark_crystal_age_of_resistance_ostgcmej.pdfIn PDF document text
    • http://godomun.iblogger.org/fall_festival_flyer_template_free_word.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/9iiVMjj/josatixep.pdfIn PDF document text
    • http://iclod.tech/kofutudapazuzobekamoxd149.pdfIn PDF document text
    • http://sfhgfje5df.xyz/sinigetafibutotv589.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ledugezutixajo.epizy.com/gorar.pdfIn PDF document text
    • http://soxuxemakim.rf.gd/52385685606.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66E 5404 bytes
SHA-256: 40197dc64a8df7aa2d77f960d9b311a5a50a871e5a3fe77a467fb8a63ec8fd79
font_01_sfnt_off0000e8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B2 10428 bytes
SHA-256: 42ec7ee81d327adebda742d40d64f3906d9d043844bfdc30f3a5f96eab0ce52f