Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0ebbeb6861b011…

MALICIOUS

PDF

74.7 KB Created: 2021-02-15 20:27:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fffd4c991fa67571865a6b02a75d2d0b SHA-1: ab9af3880657d55f0d4679aedc95624b758a1714 SHA-256: 3e0ebbeb6861b011fbadd9be5553fa6af4cc3bb1db83dfb77374d80191ab7614
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL suggests a phishing attempt, masquerading as a free download for an 'arborist certification study guide' to trick users into visiting a potentially harmful site.

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://druttle.ru/wix?keyword=arborist+certification+study+guide+free+download PDF link annotation
    • https://cdn.sqhk.co/dulinifijal/wihRjS4/crafty_craft_for_minecraft_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vidikusupegu/cvvv14M/funny_romantic_anime_movies.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/gNDijhi/hockey_training_balance_board.pdfIn PDF document text
    • http://jowuguzipupuv.iblogger.org/wixurafisamazeg.pdfIn PDF document text
    • https://wexarasi.weebly.com/uploads/1/3/4/3/134351888/zovawagibunudof.pdfIn PDF document text
    • http://wovolutoxali.iblogger.org/tadamewugo.pdfIn PDF document text
    • https://cdn.sqhk.co/suzeboxiwo/dhjEZav/30748756474.pdfIn PDF document text
    • http://ketokod.iblogger.org/alcohol_withdrawal_syndrome_treatment_guidelines.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/teximikamukubo/finding_slope_worksheet_grade_8.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/autodesk_autocad_civil_3d_2013_free.pdfIn PDF document text
    • http://gerodusiwisegog.rf.gd/realidades_2_capitulo_1a_page_14_answers.pdfIn PDF document text
    • http://didazejitikav.rf.gd/7046161040.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/xafopolekasuzibowerivol.pdfIn PDF document text
    • http://repuvamiperubo.epizy.com/consumer_reports_cars_2019_list.pdfIn PDF document text
    • http://wugulinutefi.rf.gd/linux_vim_commands_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/install_game_center_on_android.pdfIn PDF document text
    • http://fudapigoxuwumu.rf.gd/pumutibarigipimupapuru.pdfIn PDF document text
    • http://putesedesupelo.epizy.com/71034012301.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C9 5396 bytes
SHA-256: 50fb0e556b4330aa98ad100ec0b97ea01d0fa4991befc28b63ad1a5fcdd1a643
font_01_sfnt_off0000ea3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3B 10980 bytes
SHA-256: 8e20e2c92e6f2a3888edd45bdbbce0152c8bc80f2bb2daf4597b4f7dec53d51d
font_02_sfnt_off00010f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F65 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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