Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5e3c6afba219fc7…

MALICIOUS

PDF

97.1 KB Created: 2021-04-03 17:09:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58c164b2f79dc12a236e8b3cd0592234 SHA-1: 89049b1a68c67d39a145ebb3c503e01840f8a24a SHA-256: a5e3c6afba219fc78f031bfe0b51591422067810a6751864f3b86d3a8c56a535
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, which identified it as Pdf.Phishing.Trojan. The embedded URL `https://soxebez.ru/123?utm_term=frightful%2527+s+mountain+chapter+7+pdf` suggests a phishing attempt, likely to trick the user into downloading a malicious payload disguised as a document. The presence of embedded URLs and the nature of the ClamAV detection strongly indicate a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=frightful%2527+s+mountain+chapter+7+pdf
    • http://nogixif.iblogger.org/11610851924.pdf
    • https://cdn.sqhk.co/jofomopunaw/g6eQh1H/nsi_job_exam_admit_card.pdf
    • https://cdn.sqhk.co/wetilusogaki/nbIJydi/wasuzikapedesi.pdf
    • https://cdn.sqhk.co/gadukupuwe/ghijAha/play_fun_mini_games.pdf
    • http://fajasated.mywebcommunity.org/dipedovifetofov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fogivezin.rf.gd/halo_fall_of_reach_comic.pdf
    • https://s3.amazonaws.com/pubopelej/blitz_aram_guide.pdf
    • https://s3.amazonaws.com/firigugixujotov/english_as_a_second_language_esl_placement_test.pdf
    • https://s3.amazonaws.com/xakapudakadu/yamaha_rx-v377_review.pdf
    • https://uploads.strikinglycdn.com/files/2ab41e73-b458-44f4-a1b0-ad4c47ff1a17/69830329373.pdf
    • https://uploads.strikinglycdn.com/files/996f4016-bbd8-4e9d-9bdf-8c94d7cff4d4/skyrim_mods_xbox_one_crashing.pdf
    • https://uploads.strikinglycdn.com/files/ca6ff2e6-8091-442b-9e38-473d496fa21c/what_are_some_sales_job_titles.pdf
    • http://xiniwipilanaju.atwebpages.com/air_pollution_control_equipment_calculations.pdf
    • http://tizosife.rf.gd/bazozoveto.pdf
    • http://sexesivakolek.rf.gd/xikalezafowo.pdf
    • https://uploads.strikinglycdn.com/files/adaeb370-b8a6-40ea-b3d8-6864456fc62d/portable_dvd_player_for_car.pdf
    • https://s3.amazonaws.com/lebejos/hyrule_warriors_young_link_guide.pdf
    • http://nezuwuxupewe.rf.gd/pozugilikulin.pdf
    • https://s3.amazonaws.com/dovulavavo/multiplying_and_dividing_fractions_worksheet_7th_grade.pdf
    • https://s3.amazonaws.com/boxujetanonikuv/mind_booster_app.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_off000140a5.bin
64e4bbbe2f06ece04b378e0f16b1951e10924f917304f9fc9b1f768aa54b5145
pdf-font-stream PDF embedded font (sfnt) at offset 0x140A5 5636 bytes
font_01_sfnt_off000153bc.bin
f77cd3ba59e3f49278a497c5a44a196b9ac6d2cfc5ac908fd24666c35ca0688d
pdf-font-stream PDF embedded font (sfnt) at offset 0x153BC 10440 bytes