Malicious PDF — malware analysis report

Static analysis result for SHA-256 da9bf0471a3118a2…

MALICIOUS

PDF

62.9 KB Created: 2021-01-28 00:49:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 477e993cec8ca19f16d0cbc8516e9e9d SHA-1: 378ca408a344435a6d86e42e5a82132fae86f195 SHA-256: da9bf0471a3118a23dd974474ae0104e476205bcbc4fb28e151949dfcb610316
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jottigo.ru/wb?keyword=heart%20rate%20monitor%20app%20android%20bluetooth PDF link annotation
    • https://cdn.sqhk.co/ludibipimilu/Djgjzn0/61041952245.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/atlantic_rim_resurrection_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/kipaselofuza/3hjif8o/movistar_plus_series_mejores.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465701/normal_5fececee8579e.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/dBAPgh3/jump_rope_training_videos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495042/normal_5ff8d4242b968.pdfIn PDF document text
    • http://jusefaw.22web.org/death_note_movie_2017_parents_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5fe4153aa3129.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafepel/ubifOih/wyze_camera_v2.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/gibBgcW/10946752190.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408176/normal_600d87ff33e6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419211/normal_5fdb905c17922.pdfIn PDF document text
    • http://zakoroxani.22web.org/4_times_tables_worksheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470703/normal_5fe8b4c1ba903.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rolodumom.epizy.com/breakthrough_2019_soundtrack.pdfIn PDF document text
    • http://murarefap.epizy.com/gelaxaroxedazawilon.pdfIn PDF document text
    • http://jemibare.epizy.com/bhakti_songs_free_site.pdfIn PDF document text
    • http://xijuroluzuka.epizy.com/46754293688.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_off0000bc49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC49 5124 bytes
SHA-256: 34982434f63f69397328bb551af7a67e7f4063530e74ea08ae4193de1a306709
font_01_sfnt_off0000cd7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7B 9620 bytes
SHA-256: 7d8a46175784a42ea1e123b23567424b18dcb39b08d81ba9b7d5cdc62f21a51b