Malicious PDF — malware analysis report

Static analysis result for SHA-256 e33d0e9777492a3d…

MALICIOUS

PDF

77.5 KB Created: 2021-03-16 19:19:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0cbadf557e458c49a4de44d95e07a65c SHA-1: 16b462560eb8c6177af8d59da5bcc36ccb9b0548 SHA-256: e33d0e9777492a3d5ec11e3b099b559a09077a304f0c0767f7898e7c3c550f7c
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/123?utm_term=appdata+roaming+microsoft+templates+empty PDF link annotation
    • https://cdn.sqhk.co/zezetemirag/Hieygjf/34213986283.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/cMvjb3M/dhoom_3_cast_child_artist.pdfIn PDF document text
    • https://cdn.sqhk.co/pulobegefuzi/cOifIgi/hero_wars_best_team_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b064d0e4-88d6-4b7e-8087-8ebf790fcba6.filesusr.com/ugd/ca32a8_d0215b64e6f4483ebfb78ee16cd6c5f3.pdf?index=trueIn PDF document text
    • https://01d7ec8a-e38e-4e33-8c76-1be31754498b.filesusr.com/ugd/24d943_cb1890fb21834f3cb7b661fd00901132.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/699fd7bb-0787-4532-b992-e70983575ac9/quadratic_equation_vertex_form_to_intercept_form.pdfIn PDF document text
    • http://bexamunexena.rf.gd/31763862785.pdfIn PDF document text
    • http://jonegukum.epizy.com/vobejuzafap.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/chloroform_water_uses_in_pharmacy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/934b66ed-69a2-4219-b1ff-2fe75bb534e3/sony_ic_recorder_icd-ux533f.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/flute_sheet_music_for_popular_songs_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/kirkland_spiral_cut_ham_cooking_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/vejavanoburunepo.pdfIn PDF document text
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_509040f7c7724b449d59862ffe43c639.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb21be7e-2f69-4b80-905c-8f5b04520ecf/basic_korean_language_words.pdfIn PDF document text
    • https://e5aadbcf-511f-4ee2-989a-4410a22eeed0.filesusr.com/ugd/64930c_fa34cc31005048aeb88fae2139a3ad47.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/xirajukuxuzopidis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71ed42b7-5355-4516-9ea6-5a9208cce786/50378428160.pdfIn PDF document text
    • https://247e77cc-5367-4382-8586-7c5891409f42.filesusr.com/ugd/2dbf5a_15cb28219f8d4988af49518861e49e86.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/61ea206e-cabd-420d-a826-79cc2889514d/27407082050.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/ogcio_big_data_analytics_platform.pdfIn PDF document text
    • http://godimodasixor.rf.gd/american_sniper_ending_song.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/whats_the_difference_between_pizzazz_and_pizzazz_plus.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_off0000ee81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE81 5564 bytes
SHA-256: dfd3a12b96db7e2882c7df9f7b7b276c4ddafa3979c14fd174d5c0c4887840f5
font_01_sfnt_off00010165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10165 10808 bytes
SHA-256: 493cd077071d96b88d7e57ef911bb255abd46926bff0f1c663216f4e2f8cc8ba