Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc6d3497a0c4a24…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 04:30:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c23a755169a177137237fde6ed5a1157 SHA-1: 74ad6aabb10639e448f72f6e4b5ccafa573e36af SHA-256: bcc6d3497a0c4a24b9ffdf7beda9383833fc955cb9f1bd9cb067d3c10b9e3024
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content. The presence of an external URI and the overall detection by multiple security tools indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/123?utm_term=what+is+the+theme+of+stave+3+of+a+christmas+carol PDF link annotation
    • http://zobotalemogi.sportsontheweb.net/35203308726.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459477/normal_5ff070a8b30ec.pdfIn PDF document text
    • http://jafoxidulez.mypressonline.com/9351864202.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/list_ten_element_of_system_approach_to_instruction.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410027/normal_6017709c1b3f6.pdfIn PDF document text
    • http://shoop-fh.ru/fewoxexikejigidumaxazewrg8z.pdfIn PDF document text
    • http://jarewitof.mypressonline.com/what_frequency_is_the_flower_of_life.pdfIn PDF document text
    • http://okstore.info/dirtiest_songs_of_the_90s_r_bzsbrs.pdfIn PDF document text
    • http://trastqort.online/the_alienist_season_1_episode_7_synopsisxi9mo.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/xomepixo/adjektivdeklination_mit_komparativ_und_superlativ_bungen.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/can_you_use_true_polymorph_on_yourself.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/ielts_writing_task_2_general_answer_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/aashiqana_movie_song.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/fire_and_ice_robert_frost_analysis_shmoop.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/christian_angelology.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/excel_spreadsheet_drop_down_list_multiple_selection.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_off0000e029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE029 5360 bytes
SHA-256: 7265105516aa0b29d6d02e6d210ed1e1fbce27953c7af5befe963f4561f0a0fd
font_01_sfnt_off0000f24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24A 10628 bytes
SHA-256: c964e65890763aa55e798625ac365886ba44ae8e3524845c9655f35a5baca360

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