Malicious PDF — malware analysis report

Static analysis result for SHA-256 4286153283376b8a…

MALICIOUS

PDF

74.6 KB Created: 2021-03-21 02:04:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 917e7b8b63460dfcc8d9c01f58a2385f SHA-1: a1a7fb2cc1772b5dc258847eee662e840d0a1b91 SHA-256: 4286153283376b8a72c10c181d5006ca19fa98c9492313c8b5cb9f94713076a0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable domains or link farms, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, contains references to 'slope game unblocked 6969' and 'wkhtmltopdf', indicating a lure to a potentially malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://leonvi.ru/wix?keyword=slope+game+unblocked+6969 PDF link annotation
    • https://cdn.sqhk.co/jisepozidis/hehcTif/vizazurogotalofabefegu.pdfIn PDF document text
    • https://risonozolediwar.weebly.com/uploads/1/3/1/3/131398017/gomanisubabew.pdfIn PDF document text
    • https://teniroge.weebly.com/uploads/1/3/4/6/134693228/lofugofomokujeb-vubitunokatuz-valovulizoko.pdfIn PDF document text
    • https://cdn.sqhk.co/toneribabut/Ypcejcl/knives_ship_free.pdfIn PDF document text
    • http://salonlabs.xyz/96087962064a4is2.pdfIn PDF document text
    • https://nokogijesa.weebly.com/uploads/1/3/1/4/131452879/vazavepegapeku.pdfIn PDF document text
    • https://kododexupali.weebly.com/uploads/1/3/4/8/134888278/javavik.pdfIn PDF document text
    • http://azakalaza5.xyz/verbos_regulares_e_irregulares_en_ingles_en_pasado_y_presente3knni.pdfIn PDF document text
    • https://bemafaparad.weebly.com/uploads/1/3/2/6/132681832/1021823.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_604aa65602b1a.pdfIn PDF document text
    • https://lijipipixeralof.weebly.com/uploads/1/3/3/9/133999964/e42dcaf928eab5.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/1vHCjee/rpg_games_online_2d.pdfIn PDF document text
    • http://look-hotel.com/gigapugazeruzizojedury6hv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490141/normal_603e743fbdbc4.pdfIn PDF document text
    • https://xamukujivova.weebly.com/uploads/1/3/1/3/131384573/rukizajug.pdfIn PDF document text
    • https://cdn.sqhk.co/faxixuwako/ehdiijd/24742414724.pdfIn PDF document text
    • https://sozejaras.weebly.com/uploads/1/3/2/6/132695734/xakezo_naketek_kobores_tinoniw.pdfIn PDF document text
    • https://nolilozeto.weebly.com/uploads/1/3/5/9/135957670/ligoxodewepovar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480904/normal_5feb81c6d2056.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/zjdYgfb/blocktopograph_para_ios.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473030/normal_6015415cc59eb.pdfIn PDF document text
    • http://kernig.pro/how_to_bake_rainbow_trout_with_skinwyata.pdfIn PDF document text
    • http://100naturals.fun/11528053470uqia5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/51a46c51-5206-49b4-bdbb-29de5ae1849e/aquasource_tub_and_shower_faucet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b28f19c-967b-4508-8cb1-fdc9cbc79d6a/twilight_series_books_age_rating.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15560d45-52a0-4dc4-8335-7c2b327d5063/18975234789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbe3e790-3558-47d4-8a24-447a420311fb/who_are_the_4_main_characters_in_the_tempest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8828a119-74e7-423f-8911-3c4f1808fc31/oxford_english_grammar_course_download.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_off0000e49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49A 5736 bytes
SHA-256: 325e374199cfe8eb2329df48d4993d62eae2c6317dc2e625f9b6cd85d854015b
font_01_sfnt_off0000f80a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80A 10636 bytes
SHA-256: 101338d73784ac8ea370b0fe995b803e6f974d95859d90cc3611e6e948ecb778