Malicious PDF — malware analysis report

Static analysis result for SHA-256 506d5b0fada5ded9…

MALICIOUS

PDF

68.9 KB Created: 2021-03-16 20:23:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11dde36626ea7ca4da7abe936c7570a9 SHA-1: b99328559dbe57cf9f4503d1436e8e2d1e411ce2 SHA-256: 506d5b0fada5ded9259dac6f8e1d1d87de11b3e8dad762f23864f9a97af25fbe
96 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains a URL that appears to be a lure for users searching for specific local information. The presence of embedded URLs suggests an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wix?keyword=white+pages+new+zealand+taumarunui
    • http://maleev.online/tepofilopokelufefusrams4.pdf
    • http://cashbackk.site/acer_chromebook_11_user_manualtfnx0.pdf
    • https://cdn-cms.f-static.net/uploads/4374521/normal_600fba6233022.pdf
    • http://supobesopo.mygamesonline.org/onde__feriado_dia_20_de_novembro_em_sp.pdf
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5fd2f62043ea2.pdf
    • http://viza.expert/jipogudukqyohp.pdf
    • https://cdn-cms.f-static.net/uploads/4482206/normal_604f28313976e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/57322848-7d23-4046-a9de-433647428d7f/71675416812.pdf
    • http://logiweliziweje.onlinewebshop.net/2015_washington_redskins_cheerleaders_roster.pdf
    • http://miduzusajaveg.rf.gd/filter_multiple_columns_in_google_sheets.pdf
    • https://uploads.strikinglycdn.com/files/22d21fed-b182-40fa-bc73-35c7d1d40665/vawudakiginadi.pdf
    • http://zoxarulal.rf.gd/polaris_280_backup_valve_not_working.pdf
    • https://uploads.strikinglycdn.com/files/58361337-1c49-40cf-92be-25fe03810fe8/what_age_is_18-30_months.pdf
    • https://uploads.strikinglycdn.com/files/3d41bdf9-1158-4483-8833-99dcaa6e794f/best_fpv_drones_for_beginners.pdf
    • http://torejejowomu.myartsonline.com/joxezixiwizazogo.pdf
    • https://uploads.strikinglycdn.com/files/c11008a7-f32a-4063-98fe-152432dd2e08/jaraxokuzujuvexaduvi.pdf
    • http://xabudavadeguvo.myartsonline.com/beninonet.pdf
    • http://gozenabuzixi.onlinewebshop.net/nudizeririronexovuzifew.pdf
    • http://gelisufaw.rf.gd/gosazamejuvezumivopeperop.pdf
    • https://uploads.strikinglycdn.com/files/44787b94-9a4f-4341-bfda-82b8494ff1a3/simple_explanation_relational_database_management_system.pdf
    • https://uploads.strikinglycdn.com/files/eeeed8c3-45b5-4ca5-b15d-6430a3328cff/35800092103.pdf
    • https://uploads.strikinglycdn.com/files/a3dce052-d584-4124-9e1c-e8805f590003/premier_protein_powder_for_weight_loss.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_off0000d13e.bin
7c466f0c25a75ca313654fbbba22fb3ace0c43fddf2d33428a3137370215ebf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD13E 5528 bytes
font_01_sfnt_off0000e400.bin
62dd4f325182f6b2cab566cf24e07fbf1d3b72d633203350c4ac79ae6e399da0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE400 9916 bytes

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