Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb0d874ec50b54a7…

MALICIOUS

PDF

75.9 KB Created: 2021-04-06 16:14:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9d599274a121d4f555773ad9e9f7258 SHA-1: bc6f880f3116bb908ac1a4f58eb9b27a5d584993 SHA-256: cb0d874ec50b54a7c7c5433b726faa290a28cf9d9d4206e80f71079c4af99ff4
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with the primary one being 'https://botokaw.ru/strik?utm_term=taco+bell+steak+soft+taco+fresco+calories', suggesting a phishing or scam lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=taco+bell+steak+soft+taco+fresco+calories
    • http://rafale.store/jugexilikilinaweterekvkoyt.pdf
    • http://odemebayisitrafik.com/organic_chemistry_basics_in_telugu81zrn.pdf
    • http://pivowave.iblogger.org/letter_t_worksheets_for_kindergarten.pdf
    • http://mkuu.club/25th_wedding_anniversary_card_template6wcnr.pdf
    • http://fewafef.iblogger.org/adobe_acrobat_standard_dc_edit.pdf
    • https://cdn.sqhk.co/wusirilunoko/dggn5gc/new_horror_movies_english_free.pdf
    • http://ig-copyrighthelpcenter.com/cloud_computing_architect_salarypr3uc.pdf
    • http://kavuwabu.22web.org/advantages_and_disadvantages_of_socialism_and_capitalism.pdf
    • http://nicepics.xyz/calluna_sans_font_family_freei39tr.pdf
    • https://cdn.sqhk.co/kowetitemaro/jhhmlid/lullaby_for_baby_to_sleep_mp3.pdf
    • http://unlockdeals.shop/48131987572otzv9.pdf
    • https://cdn.sqhk.co/gogojelawov/ibDHQqT/stacky_bird_mod_apk.pdf
    • https://cdn.sqhk.co/wanazofemuvu/i3jbjhf/ecosystem_worksheets_5th_grade.pdf
    • http://euroshopmn.space/kiss_acrylic_toenail_kitiesiq.pdf
    • http://topplafond.xyz/whirlpool_water_cooler_not_coldhhp20.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://229013d5-0e14-4531-be8c-43df84542e77.filesusr.com/ugd/e4a895_88f5301d5fd747e19014b82e0a35f354.pdf?index=true
    • http://duvuxosejoxogu.rf.gd/baunvo_1990.pdf
    • https://9fb0fece-6c2a-4f8b-8ff1-5d9ea67f5ee7.filesusr.com/ugd/f6a907_1be6219d9f7f40ae968627ec5ec47278.pdf?index=true
    • http://putesedesupelo.epizy.com/bluestacks_app_player_latest_version.pdf
    • http://wivufaw.epizy.com/edit_text_ke_word.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_off0000ea09.bin
82aadcef2f3e443e05f5f2b2694b445e6a65d28a6ea4d63253ace381111d0c25
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA09 5028 bytes
font_01_sfnt_off0000fb36.bin
4dcbbf7a2c12c9af50974aaa9e3ef5c13d8f8e0b0c72d389ca6e2465ade6c02d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB36 11252 bytes