Malicious PDF — malware analysis report

Static analysis result for SHA-256 8287b705929aaeff…

MALICIOUS

PDF

72.1 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: ca9b4d27f7ee553be2825462314aa6f0 SHA-1: 1405b76959b406a1c6ac615129c7ae9df4a60fae SHA-256: 8287b705929aaefff0488bc1a3e09a33fbc0c8c8345f486442cfef5f28491836
124 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to 'jumiwimov.ru', suggesting a phishing or malware distribution lure. The document body, though heavily obfuscated, appears to reference a free download, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8673

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://fedorahosted.org/lohitIn 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 2

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
font_01_sfnt_off0000e6e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E1 25368 bytes
SHA-256: 52027d4c4354fa66ebb64a9ebb36625f863974b8180edf17a92288a9d5270e9b

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