Malicious PDF — malware analysis report

Static analysis result for SHA-256 55e1b05c6f6d8899…

MALICIOUS

PDF

76.7 KB Created: 2021-02-23 23:04:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b39adaa9f447a60c8a61d7c18fafb4fb SHA-1: a67e797e47df2dcdcf7ddeb77552757a821adaa6 SHA-256: 55e1b05c6f6d8899dd13b5868c4a839a39bc8b45933b8e85625afa5eb60e9cdd
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=asus+xonar+dx+7.1+pci-e PDF link annotation
    • http://fapenas.22web.org/free_flyer_design_templates_illustrator.pdfIn PDF document text
    • http://espacecmb.xyz/what_does_stairs_mean_in_your_dreamsqu5fx.pdfIn PDF document text
    • http://reabook.online/doomer_girl_meme_templatefl9kk.pdfIn PDF document text
    • https://cdn.sqhk.co/polidupokasu/bhjhfXi/zombie_defense_hack_premium_apk.pdfIn PDF document text
    • http://mx50off.pro/contoh_rpp_biologi_sma_kurikulum_2020_revisi_2020ja2xq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472479/normal_6032e348201ee.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/tipos_de_archivos_linuxxlhvl.pdfIn PDF document text
    • https://cdn.sqhk.co/bezakebijuk/sUhgrhj/javadididizixasom.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/38591099811vi7g1.pdfIn PDF document text
    • https://cdn.sqhk.co/kabevapixox/TlGBJVT/rainbow_bunny_unicorn_my_favorite_pet.pdfIn PDF document text
    • https://cdn.sqhk.co/nozelenid/I1ohdij/38153906774.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/WT0ujj2/87099483674.pdfIn PDF document text
    • http://helpverifedbadges.com/94131186836j87d1.pdfIn PDF document text
    • http://guzolemidova.iblogger.org/convert_to_word_doc_ocr.pdfIn PDF document text
    • http://nekretnine.site/18199092941mqzbg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gutazerabudapa.epizy.com/probability_worksheet_grade_7.pdfIn PDF document text
    • http://tuvufuxo.epizy.com/mukafejurofevadu.pdfIn PDF document text
    • http://gefuxexo.epizy.com/nelson_bc_fire_report.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_off0000ea0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0E 5288 bytes
SHA-256: 1f0862a968478b658a73e355be937416d9085c11114356d4879c140e9be721cf
font_01_sfnt_off0000fc36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC36 13192 bytes
SHA-256: 97b4f4f7c341245f0c37405bb3800f0a68f0fd4c71ecbdc5b05575c50280de1f