Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c57c58dc9b6f22…

MALICIOUS

PDF

86.1 KB Created: 2021-02-26 06:09:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 07e06848710ac34359348f405fa5ba3c SHA-1: 9751e74daf111cc3015e4bc5c5fc6f07975e5342 SHA-256: f5c57c58dc9b6f22190ee61ee2743a75b57b657b0aa67f638ff924eded04e325
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://seumenha.ru/wix?keyword=topographic+map+analysis+worksheet+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4505326/normal_5ffeecdb8de21.pdfIn PDF document text
    • http://fartook.online/albert_fish_book9hfew.pdfIn PDF document text
    • https://cdn.sqhk.co/fisejadiruw/04ihhaJ/71242207072.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5fec7a4d705e2.pdfIn PDF document text
    • https://cdn.sqhk.co/pevejotomoma/ccRjcwk/microsoft_math_calculator_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/iK28hiE/hotstepper_lyrics_bexey.pdfIn PDF document text
    • http://copyrightreports.com/vivid_seats_event_ticket_insurance5vkd7.pdfIn PDF document text
    • http://dekagexagupeje.iblogger.org/18159366174.pdfIn PDF document text
    • https://cdn.sqhk.co/zaperarori/heegjhh/lost_river_cave_bowling_green_ky_42101.pdfIn PDF document text
    • https://novifutifodex.weebly.com/uploads/1/3/1/6/131606636/7663213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490125/normal_60222b46874e7.pdfIn PDF document text
    • http://organize.shop/kannada_challenging_star_darshan_photos89hr9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452851/normal_5fd0d41a5b37b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://konevimojo.epizy.com/how_to_day_trade_penny_stocks_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/18659768449.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/adamson_senior_high_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/best_free_2d_game_engine_for_android.pdfIn PDF document text
    • http://desakoda.rf.gd/atkinson_dam_fishing_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_off000114ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114ED 5556 bytes
SHA-256: ffd51899a0e44ed04d8ca54de302269b1b9603b36da711b9924c79d3480d9278
font_01_sfnt_off000127c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127C5 10532 bytes
SHA-256: 814dbf4c262a25daa0048b00c64ac7950d2fca2af3966d65accecd8a1647c530