Malicious PDF — malware analysis report

Static analysis result for SHA-256 c524662267a3b75a…

MALICIOUS

PDF

68.7 KB Created: 2021-03-04 18:40:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4565ae85541db6bf18515c3ac962abee SHA-1: 53e9bf03293d0d6ad8f1b7bbb4a70df186a88b86 SHA-256: c524662267a3b75a3239b9e0a546dcec25dbe337b310be2939c05977ad2e1c61
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://mezovuduw.ru/award?keyword=presidential+succession+worksheet+answers PDF link annotation
    • http://healthit.space/kaththi_movie_bgm_remix9aype.pdfIn PDF document text
    • http://fartook.online/126316459692ktab.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuzigup/2Xlih5G/block_breaker_deluxe_java_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/jgejjZ7/starfall_logo_history.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/OnKgghg/samsung_j3_email_authentication_failed.pdfIn PDF document text
    • https://fukimeremunosav.weebly.com/uploads/1/3/1/3/131379236/vutolugapepixasafuja.pdfIn PDF document text
    • http://akvatehnika74.ru/tukedb22p6.pdfIn PDF document text
    • http://visunuduxat.mypressonline.com/how_much_does_it_cost_to_ship_50_lbs_fedex.pdfIn PDF document text
    • https://kikosezuzo.weebly.com/uploads/1/3/1/3/131378972/megowemil-nojotujed.pdfIn PDF document text
    • http://scm03.ru/burnout_paradise_trophy_guideiwm9f.pdfIn PDF document text
    • https://cdn.sqhk.co/motanunika/igc8hbv/hocus_pocus_dani_now.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://22449060-8e30-4723-8828-967625cce342.filesusr.com/ugd/eddc50_d821fa3190784eb99d15ab4734da155c.pdf?index=trueIn PDF document text
    • http://wolobugoxew.myartsonline.com/vabibulepotafede.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/61496695223.pdfIn PDF document text
    • http://zevesijuduma.atwebpages.com/15485058185.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/education_city_maths_worksheets.pdfIn PDF document text
    • https://393102e6-89af-4738-8cad-89662dba8dc5.filesusr.com/ugd/33a16d_a8990ab67d5549aeb74eeccfb0c174e1.pdf?index=trueIn PDF document text
    • https://03df18d0-0a94-4077-8b44-1f3cf8b7c870.filesusr.com/ugd/23a6c3_ffbd7ec7727c477d8ccb0f4f8523d02e.pdf?index=trueIn 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_off0000cfb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB8 5184 bytes
SHA-256: b88022e2597ba41c929978ac27c3855af468c3616c210ae557ece8284b33f43b
font_01_sfnt_off0000e164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE164 10484 bytes
SHA-256: 0bd9869c63cade3cfdf037640fcd1d02f3e442c01fe23105a3d4e68abde45042