Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec93029f869021f3…

MALICIOUS

PDF

74.0 KB Created: 2021-04-10 20:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 572afe7371537c894ddd97db152991d4 SHA-1: 9e5a4099f86025e7cf4275bb97c4986be8412783 SHA-256: ec93029f869021f39ab86483e20f357ef1248e7c9fd34696517b7bca5f1d1fdb
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 0.9998

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://dafemum.ru/strik?utm_term=what+type+of+therapy+is+dbt PDF link annotation
    • https://cdn.sqhk.co/vobevufubito/bEieHR2/100_bts_songs_offline_apk.pdfIn PDF document text
    • http://zexorusawuwurew.sportsontheweb.net/effects_of_budget_deficit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387226/normal_5ff7ae6a7ec96.pdfIn PDF document text
    • http://zozavelomidabi.scienceontheweb.net/descriptive_analysis_in_quantitative_research.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387224/normal_5fd9b4970e8a1.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/joterige/29632877534.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/64560511005.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/zubivekoriguwiwotovutus.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/kalvisolai_11_quarterly_answer_key_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/calculator_app_for_nokia_c1.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/21648107625.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/do_seasons_need_to_be_capitalised.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/sex_and_the_city_season_1_episode_9_free.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/how_do_you_change_an_ott_light_bulb.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_off0000e473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE473 5352 bytes
SHA-256: 43c43546465ca5da8bc7762be7594a4d56ceb66475ae8b6bc36d1b67c9eaaa13
font_01_sfnt_off0000f6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B3 10844 bytes
SHA-256: 6623cfa0ffac26c8f4a9f62d2b16c14b6a6777202171f52d436b594fc720cddf