Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba56b06b23a8bac…

MALICIOUS

PDF

83.0 KB Created: 2021-03-26 08:31:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1cebc68123c6bb4f4bc16996b4a3b07 SHA-1: 0e59c050e59dda8af2a9cce10e295c04f2a97c99 SHA-256: eba56b06b23a8bac77334415cc0812649567e099faff37f915a444a2ad60ee6e
156 Risk Score

Malware Insights

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

The PDF contains a heuristic indicating it is part of a link farm, with a primary URL pointing to a site offering 'hacked online games'. This suggests a phishing or malware distribution lure. The presence of embedded URLs and the ML classifier's high confidence score support this assessment. No scripts were extracted, but the overall structure points to a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=stick+war+legacy+hacked+online+games
    • https://cdn.sqhk.co/pofaxexaxi/f4S1jjj/99996016299.pdf
    • https://cdn.sqhk.co/gowexenopa/heQjjic/vivararusekedezo.pdf
    • https://cdn.sqhk.co/loxowopiv/eiihegh/green_new_deal_faq.pdf
    • https://cdn.sqhk.co/gukitane/hBibQjj/factoring_trinomials_answer_key.pdf
    • https://cdn.sqhk.co/bulunazi/eFhi4jf/xanuvuxinawiredalenogol.pdf
    • https://cdn.sqhk.co/sijoputolu/R7skYpn/wejugebukagapivan.pdf
    • http://vekuzebis.22web.org/chaupai_sahib_path_in_punjabi.pdf
    • https://cdn.sqhk.co/farafakilof/eicjghh/bombshell_cast_imdb.pdf
    • https://cdn.sqhk.co/xosuridasago/iidhdUJ/risafufoximugab.pdf
    • https://cdn.sqhk.co/fujalapevame/1gjjahi/94217704513.pdf
    • https://cdn.sqhk.co/lareduke/ghW1Phd/word_calm_answers_level_87.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://1350f94c-8d6f-42b4-8351-24983ad6a49a.filesusr.com/ugd/4aae87_c95f065b3a4048abb693b84371d41c4a.pdf?index=true
    • https://s3.amazonaws.com/sezebepit/mobile_speed_booster_app.pdf
    • https://s3.amazonaws.com/pojikovewijeja/6547454209.pdf
    • https://s3.amazonaws.com/wibedubosateg/us_army_recruiting_office_alexandria_la.pdf
    • https://s3.amazonaws.com/nimuwet/aayega_mera_sawra_video_song.pdf
    • https://s3.amazonaws.com/bagokiko/how_many_sight_words_does_a_first_grader_need_to_know.pdf
    • https://0298dc5a-7924-4276-8279-06452a5288da.filesusr.com/ugd/b30cf0_daff111852c74527bae4e25632c045d1.pdf?index=true
    • https://26f2e344-8444-46ea-90c9-5a893bcc2fb3.filesusr.com/ugd/b8c837_852d489f60704080a8c9b1b6ef6cfdae.pdf?index=true
    • http://laxuraxosolun.epizy.com/tenelakogul.pdf
    • http://tovebaw.rf.gd/torajetazakidajapowod.pdf
    • https://bf23b77b-49a9-4bef-a898-a03cfb94aefa.filesusr.com/ugd/134172_7a9bf9c60e544d1a8b566604eb6a9e62.pdf?index=true
    • https://s3.amazonaws.com/silubebebefuju/70053058138.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/common_poultry_diseases_and_treatment.pdf
    • http://nagikesedogoru.rf.gd/delhi_cet_answer_key_2018.pdf
    • https://s3.amazonaws.com/wulagisi/driving_licence_test_questions_with_answers_sinhala.pdf
    • https://s3.amazonaws.com/lepefi/godafumup.pdf
    • http://mivowejow.rf.gd/9139814514.pdf
    • https://s3.amazonaws.com/vavejijitatofu/firework_piano_sheet_music_easy.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_off0001037a.bin
9b8f20e2c77b5fbb4e9224d6ec0cdacd748f6722df9ac1f0a18629504756adc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1037A 5716 bytes
font_01_sfnt_off000116d8.bin
7931da2abeb9de1b4d32519561b710b31ffedeb50eaa83a85e145cda86fab766		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116D8 11424 bytes

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