Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2d104057f6a633…

MALICIOUS

PDF

85.5 KB Created: 2021-03-22 01:12:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04c6cdff4815e560206dba3a53ea04e3 SHA-1: 418dd99810647e55134435cf13c8fa3b544cb3af SHA-256: 3e2d104057f6a633173ecbd7e3221e765de2a8ddfa5fb2eba0733fca492b98e6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'leonvi.ru', which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, contains text related to religious studies, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://leonvi.ru/award?keyword=adoracion+al+santisimo+para+jovenes+pdf
    • http://kejoxemubogese.mywebcommunity.org/how_to_wrap_a_present_in_a_box.pdf
    • https://cdn-cms.f-static.net/uploads/4489609/normal_5fd7a8e8663c5.pdf
    • http://vuvodagedene.scienceontheweb.net/mechanical_design_of_machine_elements_and_machines_a_failure_prevention.pdf
    • https://cdn-cms.f-static.net/uploads/4426571/normal_6017c613452d0.pdf
    • http://fixewizafufigiz.22web.org/digital_to_analog_conversion_methods.pdf
    • http://pevazaw.mypressonline.com/statistical_analysis_of_experimental_data.pdf
    • https://cdn-cms.f-static.net/uploads/4365542/normal_6012a91248be4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mizeteb/lords_of_the_fallen_trinkets_guide.pdf
    • https://s3.amazonaws.com/topipovikapari/men_s_shoe_fitting_guide_width.pdf
    • https://s3.amazonaws.com/genijusemu/optiplex_7010_sff_video_card_upgrade.pdf
    • https://s3.amazonaws.com/xijuxosisomuna/hepatosplenomegaly_differential_diagnosis.pdf
    • https://s3.amazonaws.com/legapatatezisa/92402868918.pdf
    • http://maguzuj.rf.gd/minecraft_story_mode_pc_completo_gratis.pdf
    • https://s3.amazonaws.com/vukumesoj/excel_sheet_for_personal_expenses.pdf
    • https://s3.amazonaws.com/luropi/lymphoma_contouring_guidelines.pdf
    • https://s3.amazonaws.com/didowugorokirug/scary_short_stories_for_middle_school.pdf
    • http://foxukekamusun.onlinewebshop.net/fasenitugebovubovefevi.pdf
    • http://zorikeroz.onlinewebshop.net/modolowavugimav.pdf
    • https://s3.amazonaws.com/rodakarugupoko/title_page_of_a_report.pdf
    • http://gigezevozaf.epizy.com/wijimoxugixaredenopewobig.pdf
    • https://s3.amazonaws.com/xovekolamoxe/portable_antivirus_for_pen_drive_free.pdf
    • https://s3.amazonaws.com/mubemutolewe/xejediboweriwabamodekiz.pdf
    • https://s3.amazonaws.com/midizaxopazeji/adjetivos_compuestos_en_ingles.pdf
    • https://s3.amazonaws.com/mokamoba/vutexijebe.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_off00010dc8.bin
c1bce8f034a44bc5fc25bf1269997ad031cd29bf2775243e1eb25bb884e5dea8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC8 5424 bytes
font_01_sfnt_off00012034.bin
d1cd9aa4cc53138d2da6997c25589d77c52e63df0e8148fcdcd60b2b1b05ea4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12034 12060 bytes

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