Malicious PDF — malware analysis report

Static analysis result for SHA-256 b34a4b7d63b2f189…

MALICIOUS

PDF

78.5 KB Created: 2021-03-13 20:55:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 810bfaa660d3761bdd554bfc9e2b5041 SHA-1: 34c8aed2708b822eabac3e27b6e75b40a38361fc SHA-256: b34a4b7d63b2f18924e32c678db04a952f8efa252f8e6f893064746dd2dbae64
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://maypoin.ru/award?keyword=ksi%25C4%2585%25C5%25BCka+do+angielskiego+dla+pocz%25C4%2585tkuj%25C4%2585cych+pdf PDF link annotation
    • https://cdn.sqhk.co/pewonogip/ifbNSxC/48838693395.pdfIn PDF document text
    • http://skidki-day.site/27662567814t0r2t.pdfIn PDF document text
    • http://eurosett.net/pefunofudalalamanazupcq57w.pdfIn PDF document text
    • http://medway24.com/motorola_ht1000_for_sale8eg01.pdfIn PDF document text
    • https://cdn.sqhk.co/bupabumo/gdihLja/top_10_shoot_em_up_games_for_android.pdfIn PDF document text
    • http://tasuzafu.22web.org/jebifefabepopivevu.pdfIn PDF document text
    • http://bettermoneytips.com/historia_de_la_bandera_de_estados_unidos_en_ingles_y_espaol5ko13.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/JidZHVf/japanese_snake_tattoo_color_meaning.pdfIn PDF document text
    • http://mantenancie.com/33151238478ul8f3.pdfIn PDF document text
    • http://wildboost.club/fundamental_forces_worksheet_answerswp1i5.pdfIn PDF document text
    • http://itclick.pro/creative_writing_download5rkow.pdfIn PDF document text
    • https://cdn.sqhk.co/doginifa/ehahjjh/bajka_bluejane_red_ball_4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1e1f235d-56dd-4976-b20d-d38e3fe7b172.filesusr.com/ugd/210b45_3c761aeca6594d80bc1b0192de0ff2ea.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/les_folies_d_espagne_flute_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/how_do_i_program_my_vibe_5_in_1_universal_remote.pdfIn PDF document text
    • https://387a498e-9551-4239-9507-3183ba214552.filesusr.com/ugd/cd403b_ab7205d3865946c78de585370ad3603d.pdf?index=trueIn PDF document text
    • http://duxejuxaxeze.epizy.com/surah_yaseen_in_english_text.pdfIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_dbfdb8c611fc44478dfa7e2b29f6b0ed.pdf?index=trueIn PDF document text
    • http://kipawewori.epizy.com/mrs_dalloway_portugues_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/access_coroners_reports_uk.pdfIn PDF document text
    • https://f608bf75-187c-4b28-9621-af925c05c2b6.filesusr.com/ugd/05e3ad_c66c4ec384a849208a861a8b66887c00.pdf?index=trueIn PDF document text
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_a79a178e680649b7a7bcc76ec20f5588.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vukujidor/96267958919.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/auralux_2_full_apk.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_off0000ef68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF68 5916 bytes
SHA-256: 2ff57200b4f844b7432f24e1d815b3fc4735846ad490cc17b19051a6fa48dfd3
font_01_sfnt_off00010308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10308 12544 bytes
SHA-256: 060e57ea246ee584de7c1fb8d86e3519320a64040e58579844592cc02d64b694

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