Malicious PDF — malware analysis report

Static analysis result for SHA-256 2030757e16355cb8…

MALICIOUS

PDF

78.9 KB Created: 2021-03-24 19:15:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 703858c5d5d437f1de2024aad304fe67 SHA-1: 8128c7c6548a36c6776be5401c0f62ccc89fd584 SHA-256: 2030757e16355cb8616d46fe504a96b0bee9349434249d95d915727876a387a3
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7551

Heuristics 4

  • 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
  • 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://maypoin.ru/123?utm_term=abhinetri+2+movie+songs+telugu
    • http://fakurivevid.scienceontheweb.net/49459707341.pdf
    • http://karnaval.host/anker_a7908_manualzezqd.pdf
    • http://livecopyrightverification.com/berliner_platz_1_neu_answers8xs4s.pdf
    • http://flathead.us/dividing_fractions_word_problems_6th_grade_worksheetswph9f.pdf
    • http://support-copyrighthelpservice-about.com/parliamentary_form_of_government_ppt3nwtn.pdf
    • https://cdn.sqhk.co/nixivezez/hh0fHrA/uefa_champions_league_ranking_2019.pdf
    • http://suvekitubexeso.getenjoyment.net/scales_and_arpeggios_sheet_music.pdf
    • http://sberbank.link/45856901125jpa9f.pdf
    • https://cdn.sqhk.co/takulowizi/GwfjimT/excel_sheet_data_recovery.pdf
    • http://merokomazojewi.scienceontheweb.net/hybridization_techniques.pdf
    • http://lafilubepojev.scienceontheweb.net/wesopa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ecab545c-19d2-4654-b6ac-fb8b9749f5ba.filesusr.com/ugd/e5412a_b911ba1d4d0b4d388874bc6cf167bd69.pdf?index=true
    • https://s3.amazonaws.com/limepusotanal/98227939268.pdf
    • https://b6086c54-8ef4-40f3-ba18-bbbb993b339e.filesusr.com/ugd/36e927_9854c7b16a4e48b193849f708879d569.pdf?index=true
    • https://uploads.strikinglycdn.com/files/302abdc5-ce8e-4a9b-ad0f-8dd067e51975/givowabezunobuv.pdf
    • https://uploads.strikinglycdn.com/files/49a6633c-1202-48b4-afb1-61de6882f15d/how_to_reset_overhead_door_odyssey_1000.pdf
    • http://lojabupabavize.onlinewebshop.net/the_stranger_albert_camus_chapter_summary.pdf
    • https://bf130ee1-1463-4c69-9604-1b23772ced92.filesusr.com/ugd/b4609a_b41e705455e84bfca08d899b120aa3ae.pdf?index=true
    • https://uploads.strikinglycdn.com/files/dc93c6f1-9e96-4462-a3d3-9c099a71599e/safeline_metal_detector.pdf
    • https://ef733714-782c-48ea-8991-1bc0bf0c95f2.filesusr.com/ugd/ad2ade_d5f32a5f9c744b119555449fd9f9a93b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/07bf765a-54f4-423c-bd73-3c9d0136ccd6/management_definition_by_famous_authors.pdf
    • https://s3.amazonaws.com/dazifozixawus/xozorifotuzivogiwobugemi.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011544.bin
f1b720e799ac3060b8092433121cac89c5fd570e614487ff639a517cd4bdc41b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11544 5208 bytes

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