Malicious PDF — malware analysis report

Static analysis result for SHA-256 c808268349aeb151…

MALICIOUS

PDF

71.4 KB Created: 2021-04-02 00:31:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 52b4d0ad755f40c61a16c8a0c6b7554e SHA-1: 385c11f743f36ac0845287f5a3d60cd6ec1474ed SHA-256: c808268349aeb15193115bef2df6d6fc0b7352df6b9acd15b7b7e6a0e741cb4a
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 that directs users to a site disguised as a graphing worksheet, likely to facilitate a phishing or malware distribution attack. The PDF structure and embedded content suggest an attempt to exploit user trust through a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://lozipotod.ru/wix?keyword=graphing+circles+worksheet PDF link annotation
    • https://cdn.sqhk.co/zubavagi/e2ljdgh/idle_death_knight_discord.pdfIn PDF document text
    • http://viewcreditscore.info/my_philips_tv_wont_turn_on_with_remote3u568.pdfIn PDF document text
    • https://cdn.sqhk.co/lofopapenow/5ifodDU/57807075870.pdfIn PDF document text
    • https://cdn.sqhk.co/dorejewibiz/wsKxiiL/download_indonesian_drag_bike_racing_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bivaxijo/ihidSCG/vilafiwurexukinuwobu.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/Rgjjiie/wutugarapugivuzosozifa.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/EmjhhfH/30678171871.pdfIn PDF document text
    • https://cdn.sqhk.co/mumesimasozo/gfNjenR/kevawakix.pdfIn PDF document text
    • https://cdn.sqhk.co/nadetajagupe/ielgioZ/drift_max_race_real_drift_racing_games.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/what_is_the_main_theme_of_gone_with_the_wind7u96n.pdfIn PDF document text
    • http://4bochki.ru/how_to_replace_belt_on_oreck_vacuum8ss4t.pdfIn PDF document text
    • http://unreguezff.rest/formato_solicitud_de_empleo_para_imprimirv2kkp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/us_news_world_report_law_firm_rankings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb5885f3-65ef-4c60-be47-7746f53c39b7/36811119207.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/best_portable_waterproof_bluetooth_speaker_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/28020099004.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/julian_calendar_today_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3dedc0b-fa76-4b99-9caa-aab82268e98f/download_playman_summer_games_3_for_java.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/barbarians_inside_the_gates.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/joziwoboviperan.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/how_many_calories_in_one_dunkin_munchkin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e46b8a9-a026-47ce-9c10-45dcf7f38086/63410887447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84dd429f-f199-4c4d-ad34-018121769cef/how_to_turn_heat_on_fujitsu_mini_split.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/20976749415.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/4th_grade_division_problems_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6725f1dc-c007-4413-bb23-e088d05d6060/60103539537.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_off0000d9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C4 5384 bytes
SHA-256: ced3f568990fc71388d2c57f451f5b7a4667a01ee546e5cb1f83cbdc40d532f7
font_01_sfnt_off0000ec24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC24 10548 bytes
SHA-256: 4c2885ce1f660939e423ab011d39c054576dab2de420cfa5df76118be2426a26

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