Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c78b10ebf034ed6…

MALICIOUS

PDF

67.4 KB Created: 2021-03-05 01:37:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 52dcc5c4228d6cbcefbd89c639d7602a SHA-1: 1cedc0742a00f56b43bb4a515268e4def1bf9e50 SHA-256: 8c78b10ebf034ed616a4ee10e48ac392a569622f8c5604a58b98a2ab74d4dfc5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/award?keyword=bombas+de+ariete+hidraulico+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459463/normal_5fdab385ba720.pdfIn PDF document text
    • http://megesodore.iblogger.org/96311023743.pdfIn PDF document text
    • https://sokuvefababadax.weebly.com/uploads/1/3/1/8/131856373/2052825.pdfIn PDF document text
    • https://mupasifuv.weebly.com/uploads/1/3/2/6/132680827/5616179.pdfIn PDF document text
    • https://cdn.sqhk.co/posaleren/cEwSNpF/smart_saver_pulse_oximeter_company.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454287/normal_5fcb189513bc8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464871/normal_5fca8f4628a9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5fe6c79bb75ed.pdfIn PDF document text
    • https://bomupafevusoze.weebly.com/uploads/1/3/1/4/131407549/pezojoro_wadijawuz_koleto.pdfIn PDF document text
    • https://bisebisa.weebly.com/uploads/1/3/1/4/131406118/bizaj.pdfIn PDF document text
    • http://jerimujolegem.medianewsonline.com/gewatitekawava.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469104/normal_5fc8e14f313ee.pdfIn PDF document text
    • https://cdn.sqhk.co/tedigedubemi/ijbfY10/horror_sounds_of_the_night_mp3.pdfIn PDF document text
    • https://nakakikixug.weebly.com/uploads/1/3/4/4/134490848/c748baa5.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/Y77hjCu/79258581661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421199/normal_60383eba0ab19.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/vhdGs69/android_brick_building_game.pdfIn PDF document text
    • https://cdn.sqhk.co/pifajaloro/idxjijQ/best_short_track_racers_in_nascar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://padusij.onlinewebshop.net/personal_development_goals_for_work_template.pdfIn PDF document text
    • http://xelidev.rf.gd/dbms_utility._format_error_backtrace_oracle_9i.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/texas_instruments_ba_ii_plus_both_versions_including_the_ba_ii_plus_professional.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_off0000c8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DB 5584 bytes
SHA-256: 2ebc04b401cd2970688adecedabcf7f425494699ce214de5003ee1d184d6d740
font_01_sfnt_off0000dba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA4 10784 bytes
SHA-256: 08a990b18f79edb59c8adcc5e200f20d5402c4a39a1c724602f75defa7e73510

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