Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cfee7b4fe893e3f…

MALICIOUS

PDF

83.2 KB Created: 2021-03-24 23:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab3822633d044c8c7aed0eff83762c54 SHA-1: 76eecb6ea09823b15b16086d30d600ee70504bbf SHA-256: 4cfee7b4fe893e3f806c7176eb2db91e17ec5f6c6ecfc7eee91620cb8db0df47
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains an embedded URL, 'https://soxebez.ru/wix?keyword=excel+pilot+logbook+coupon', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to coupons or logbooks, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=excel+pilot+logbook+coupon
    • https://static.s123-cdn-static.com/uploads/4493597/normal_5fcca8efe0f7d.pdf
    • http://lololoj.sportsontheweb.net/one_touch_ultra_2_battery_instructions.pdf
    • http://kogutojoveso.mywebcommunity.org/app_to_download_free_books.pdf
    • https://cdn-cms.f-static.net/uploads/4373509/normal_60152c191867b.pdf
    • https://cdn.sqhk.co/nilofixogezu/hfCijig/road_racing_tires_cycling.pdf
    • https://cdn-cms.f-static.net/uploads/4370269/normal_6044a7347c502.pdf
    • https://cdn-cms.f-static.net/uploads/4385410/normal_5fe9e5404a8d8.pdf
    • https://cdn-cms.f-static.net/uploads/4445731/normal_602d0a190a4e1.pdf
    • https://static.s123-cdn-static.com/uploads/4470982/normal_6000c8a3a1039.pdf
    • https://cdn.sqhk.co/buruvalufe/9ifgg9Q/music_player_app_for_iphone_free.pdf
    • https://cdn.sqhk.co/loxexafetivu/gJXgchd/drum_set_cymbals_names.pdf
    • http://ruguwafe.scienceontheweb.net/93376470126.pdf
    • https://cdn-cms.f-static.net/uploads/4480898/normal_60472c478375f.pdf
    • http://manamuposa.getenjoyment.net/5980391563.pdf
    • https://cdn-cms.f-static.net/uploads/4414352/normal_5feaebbdae1ae.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/donarepemi/outer_electron_configuration_for_alkaline_earth_metals.pdf
    • https://s3.amazonaws.com/kalanejaxutilif/how_can_i_make_excel_run_faster.pdf
    • https://s3.amazonaws.com/nokiva/50147531754.pdf
    • http://gakilasefit.myartsonline.com/ca_balanis_antenna_theory_analysis_and_design.pdf
    • https://s3.amazonaws.com/nonabafat/wuganubosaxewoz.pdf
    • https://s3.amazonaws.com/xomudufe/45760283896.pdf
    • https://s3.amazonaws.com/masevewi/59198805652.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0a3.bin
80626436749c659bb3cf956b4ff745202efaf5cff24869d9851ba60370ba3456		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A3 4844 bytes
font_01_sfnt_off00010143.bin
71c7d82c8fc0b3115a6ce4e80107f764583fc2e80df646bd57347e20d07f08f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10143 11388 bytes
font_02_sfnt_off00012865.bin
5c60e8cceca0249084c18f27170bb0f459c8021fcf4b2aa23eda1630eca67939		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12865 16540 bytes

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