Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d2981821ed632b…

MALICIOUS

PDF

85.3 KB Created: 2021-04-25 12:25:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e5faba57df1ee156d5d9db0679dc727 SHA-1: 72068bf07457dd8c00c20db723deea866acf5a61 SHA-256: e7d2981821ed632bb29def8b12945cbb384962ebfe5d43eee07763228bb5fdfd
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'classic literature'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/strik?utm_term=what+books+are+considered+classic+literature
    • https://cdn.sqhk.co/nugilatunu/gjpggj4/avatar_maker_free_download.pdf
    • https://cdn.sqhk.co/lokijuzim/j4L7Qhh/mafitakisuger.pdf
    • https://cdn-cms.f-static.net/uploads/4412606/normal_6013a62c48204.pdf
    • http://kakasusalulul.iblogger.org/vometatop.pdf
    • https://cdn-cms.f-static.net/uploads/4448720/normal_6062047a9edfb.pdf
    • https://cdn.sqhk.co/mujawiru/QhjgdlU/gifofuzegusujasuma.pdf
    • https://static.s123-cdn-static.com/uploads/4366987/normal_5ff4020bd56c6.pdf
    • https://cdn.sqhk.co/ridijafugemi/ghjaZMF/run_to_the_castle_2020.pdf
    • https://cdn.sqhk.co/letarezetap/CtjdgtM/fast_money_halftime_report_cnbc_fix.pdf
    • https://cdn.sqhk.co/noxomosanena/z9LFxhg/jurassic_world_the_game_mods_download.pdf
    • http://kuvewumewatono.22web.org/how_to_use_prestige_oven_thermometer_in_the_oven.pdf
    • https://cdn.sqhk.co/mewedenemez/ejihial/screen_recorder_android_app_github.pdf
    • https://cdn-cms.f-static.net/uploads/4443292/normal_5fd3278e1e123.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gojofim.epizy.com/case_in_point_cosentino.pdf
    • https://uploads.strikinglycdn.com/files/16567a9b-21f5-483c-a887-1224601e31ea/what_is_the_same_as_hypersensitivity.pdf
    • http://gikosetopetidun.rf.gd/33087856786.pdf
    • http://wezegene.rf.gd/kadakogixigunigifudazomux.pdf
    • https://uploads.strikinglycdn.com/files/d9916d02-6a02-4876-afe2-b7151dba473b/how_to_understand_math_equations.pdf
    • https://uploads.strikinglycdn.com/files/f9a2fbfc-e056-4319-8feb-46419bb92734/36687918207.pdf
    • https://uploads.strikinglycdn.com/files/ab9959cc-0b88-48a9-b689-4cfa9b0c38e1/what_is_police_intelligence_what_are_the_sources_of_intelligence_information.pdf
    • https://uploads.strikinglycdn.com/files/2d743d3e-880e-4363-91b8-d8b35f0ed1b7/microsoft_excel_2013_product_key_crack.pdf
    • http://mapedofagezil.rf.gd/dbt_emotional_regulation_skills_worksheets.pdf
    • http://memaded.epizy.com/social_media_manager_portfolio_template.pdf
    • http://wereguvepowu.epizy.com/53350343889.pdf
    • http://soxenaroguz.rf.gd/platform_account_executive_salesforce_salary.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_off00010d24.bin
a5eccf49bac5b1b353032ebab8fc9d6ed0eef9a6c46b9aa3808b194d10a3382e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D24 5244 bytes
font_01_sfnt_off00011ef8.bin
761d1d1e86a1d3f9b8a1cd7cb31df637e7d963cf32554d94c7c6cb12f03defed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF8 11592 bytes

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