Malicious PDF — malware analysis report

Static analysis result for SHA-256 061a5b6eee600a06…

MALICIOUS

PDF

73.4 KB Created: 2021-02-28 22:11:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a368aa81dcb26f3936f3f273e0a9a742 SHA-1: a3a56ef7388e3c46118370a5fe052c66d751d5ca SHA-256: 061a5b6eee600a0674f01791b642dec4c7dfd1155b7bdec30ad6c143cd5a5880
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to host a malicious payload or phishing page. The document body, though heavily obfuscated, appears to be a lure related to educational materials.

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://midufefew.ru/strik?utm_term=mathematics+textbook+for+class+6+ncert PDF link annotation
    • https://cdn.sqhk.co/noperizapewo/cih7khg/star_wars_galaxy_of_heroes_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/vutowogipu/ghejcf1/6647212878.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/what_happened_between_1700_and_1800.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/nivegugokazuvanefeweme.pdfIn PDF document text
    • http://tifalez.iblogger.org/gsecl_vidyut_sahayak_answer_key_2018.pdfIn PDF document text
    • http://gosejoligezo.iblogger.org/html5_bootstrap_blogger_template.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/metubevozisul/valuwegusidiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/adding_and_subtracting_simple_algebraic_fractions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/surviving_sepsis_campaign_guidelines_citation.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/biohazardous_waste_training_quiz_answers.pdfIn PDF document text
    • http://tumezubix.epizy.com/30751695800.pdfIn PDF document text
    • http://javewexo.epizy.com/movies_free_website_list.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/kimelubanefupozevapuvox.pdfIn PDF document text
    • http://kepofif.onlinewebshop.net/are_lock_picking_tools_legal_in_california.pdfIn PDF document text
    • http://satuwegalenez.epizy.com/location_tracker_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/72817450461.pdfIn PDF document text
    • http://somukagokololu.rf.gd/emergency_medicine_journals_accepting_case_reports.pdfIn PDF document text
    • http://giwimev.rf.gd/9492337048.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_off0000dfb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB6 5552 bytes
SHA-256: c0af7067d6ec832f477bae3bedbfb92567357a97990a590dd83fae00c98e46ad
font_01_sfnt_off0000f283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF283 10664 bytes
SHA-256: 395fa1782f239d514c3ed1483b87c468c446e700c6be40bbfa3abb2f21356210

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