Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed7a0624a84291a…

MALICIOUS

PDF

76.3 KB Created: 2021-03-03 13:30:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ede03d6c6b396145c3960bf7aca6aaeb SHA-1: 2010ee23a13c5c099fc2ea32a5fb15020f156e28 SHA-256: 2ed7a0624a84291af64a7c144757d68af34623ae7881ee89674522c6ff87d118
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a geometry practice answer key. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL points to a suspicious domain, suggesting it is used to host or redirect to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=lesson+2.5+practice+a+geometry+answers
    • https://static.s123-cdn-static.com/uploads/4383566/normal_5fce1171d3e0c.pdf
    • http://wumokejo.iblogger.org/read_180_real_book_stage_c_answers.pdf
    • https://static.s123-cdn-static.com/uploads/4388827/normal_5ffd7a0ab556f.pdf
    • https://cdn-cms.f-static.net/uploads/4484376/normal_603e9652cc461.pdf
    • https://cdn-cms.f-static.net/uploads/4404753/normal_60219ad408eea.pdf
    • http://islandlandscapesbb.com/what_to_read_if_you_like_six_of_crowstvefk.pdf
    • https://cdn.sqhk.co/desogepupema/QgfSHjr/bad_day_at_work_2020_part_7.pdf
    • https://cdn.sqhk.co/wesegagage/giieji0/color_of_the_last_ball_puzzle.pdf
    • https://cdn-cms.f-static.net/uploads/4460981/normal_600eeb4406c8e.pdf
    • https://static.s123-cdn-static.com/uploads/4493195/normal_5ff756828d1ec.pdf
    • http://sq11mini.com/best_dirt_bike_tracks_near_me6chyv.pdf
    • https://static.s123-cdn-static.com/uploads/4379229/normal_5fe19f68b99f7.pdf
    • http://true-board1.club/46066696694gmxqz.pdf
    • http://helpcenter.business/jntu_probability_and_statistics_textbook3uq9y.pdf
    • http://juvivufokif.22web.org/kill_team_core_rules_download.pdf
    • http://dabutaxezopis.iblogger.org/charlotte_hornets_schedule.pdf
    • https://cdn.sqhk.co/pedidagow/5fhidgg/nora_fatehi_all_songs_list_mp3_download.pdf
    • https://static.s123-cdn-static.com/uploads/4387421/normal_5feeb4a0d7c9b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/numunenoji/adda247_apk_file.pdf
    • http://bamasivira.rf.gd/onan_7500_quiet_diesel_generator_trouble_code_22.pdf
    • https://s3.amazonaws.com/zomuzigo/assets_vs_liabilities.pdf
    • https://s3.amazonaws.com/toguvaju/rikowilodok.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_off0000edb3.bin
00784781f639b9146a4de2a3124cc5bec32ddd94b79273f425b95374c9b8488b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB3 5644 bytes
font_01_sfnt_off000100fa.bin
42957d96549d2bc7e892e97d7e72812dfc8ae44181e98c7d17584adf06620311
pdf-font-stream PDF embedded font (sfnt) at offset 0x100FA 10184 bytes