Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ec087d7c67f7de…

MALICIOUS

PDF

59.6 KB Created: 2020-11-29 08:46:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e16695f5027a55ace2013c3ce73fcb95 SHA-1: d24bfc92af5dd54c5e1972975b7593232b786443 SHA-256: 68ec087d7c67f7de572712d1bd3eb152ba46869163060c32c8816518baf1bcc6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffe.ru/aws?utm_term=libros+de+ansiedad+en+ni%25C3%25B1os+pdf
    • https://xuvosaxefon.weebly.com/uploads/1/3/4/6/134605895/6621762.pdf
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f870bea1f480.pdf
    • https://wikefazopikevi.weebly.com/uploads/1/3/4/7/134715570/5519640.pdf
    • https://cdn-cms.f-static.net/uploads/4370267/normal_5fa7834b6a070.pdf
    • https://purowuma.weebly.com/uploads/1/3/4/4/134472698/4191123.pdf
    • https://cdn-cms.f-static.net/uploads/4471475/normal_5fab929c89cde.pdf
    • https://gatixitawenubik.weebly.com/uploads/1/3/4/6/134643062/koruvepe.pdf
    • https://cdn-cms.f-static.net/uploads/4413458/normal_5fbee04885142.pdf
    • https://siminanora.weebly.com/uploads/1/3/4/6/134611077/kuroserasipikasijom.pdf
    • https://xojexibawetu.weebly.com/uploads/1/3/4/3/134361221/2763c6ea.pdf
    • https://cdn-cms.f-static.net/uploads/4448980/normal_5fbafac1424da.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bizamesuwepe/pabatezovijodawuxat.pdf
    • https://s3.amazonaws.com/sajezife/convert_scanned_to_word_file_online.pdf
    • https://s3.amazonaws.com/muvevanepen/emulator_android_untuk_pc_ringan_pubg.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aec9.bin
bfa7d1fe5a9b6b2c8b75b787a25dbfc36f36b07d883f8ffc16cbc038cbfabcfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEC9 5296 bytes
font_01_sfnt_off0000c090.bin
82ebcc3226ac6258be3658728fdf1cfe0338274b25e600b03be1a131014708f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC090 9512 bytes

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