Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae3319bc4525b6fd…

MALICIOUS

PDF

67.9 KB Created: 2021-04-03 12:25:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3ba5c2b07a8adf48860caa4c1bb49783 SHA-1: dcdda7df0f9c54b5f2299b6317d199ea8157c7a5 SHA-256: ae3319bc4525b6fd548107eedc69bfb6f8d9cbaf9b4cd3c2ec707e7bb17c7d70
124 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one specifically identified as a link farm designed for SEO manipulation to attract users searching for free downloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to deliver a phishing or trojan payload. No scripts were extracted, but the PDF structure and embedded links suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7004

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://jumiwimov.ru/award?keyword=pdf+bhagavad+gita+in+telugu+free+download PDF link annotation
    • http://gifazat.iblogger.org/bahubali_movie_2_telugu_free.pdfIn PDF document text
    • http://neyroskakalka.site/zilisojexiwumonikufizozyhl8r.pdfIn PDF document text
    • http://lidlid.xyz/lego_batman_2_movie_dc_superheroes_unitea6rla.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/tattooist_of_auschwitz9sy8z.pdfIn PDF document text
    • http://leoidet.xyz/golenji90v.pdfIn PDF document text
    • http://amsidgi.xyz/athiran_movie_songs_starmusiqnbrtx.pdfIn PDF document text
    • http://nazhivy.net/38992058484voshv.pdfIn PDF document text
    • http://luwazesoj.22web.org/fokugepalin.pdfIn PDF document text
    • http://tumerasiwabuzip.22web.org/epson_l805_id_card_tray_template.pdfIn PDF document text
    • http://fovagenifozemub.iblogger.org/foodservice_organizations_a_managerial_and_systems_approach.pdfIn PDF document text
    • http://theraisins.pro/excel_get_data_from_another_sheetzhe0b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fewetero.epizy.com/wotadawilojosiluxe.pdfIn PDF document text
    • https://6d5fec37-5936-4ae8-8938-03a86e982f09.filesusr.com/ugd/d4da64_3637885fe0824e60a38b4e69e4b3946c.pdf?index=trueIn PDF document text
    • http://sufazomewugexu.epizy.com/79330494454.pdfIn PDF document text
    • http://vitupofelomar.epizy.com/88365512377.pdfIn PDF document text
    • http://sesunofopum.epizy.com/rachmaninoff_vespers.pdfIn PDF document text
    • http://najevepa.epizy.com/4814599521.pdfIn PDF document text
    • http://kejarajavamoge.epizy.com/is_nordictrack_s22i_worth_it.pdfIn PDF document text
    • http://doroxepazu.epizy.com/how_much_to_start_a_pawn_shop.pdfIn PDF document text
    • http://doruxexim.epizy.com/how_to_spell_be.pdfIn PDF document text
    • http://wunorewotiv.epizy.com/tufigome.pdfIn PDF document text
    • http://gixisenusadat.rf.gd/forawave.pdfIn PDF document text
    • https://b01ec662-dec5-4f54-b977-8708717d6054.filesusr.com/ugd/07e02c_d4a252c03186435c8ee95d7e011b2bb1.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D7 5284 bytes
SHA-256: 6c201a8a4d2634ded1f01092e658b59b0169157cb507a85f3f91f6eee1594780

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