Malicious PDF — malware analysis report

Static analysis result for SHA-256 da455f194bbc122b…

MALICIOUS

PDF

73.2 KB Created: 2021-03-19 04:49:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: c8a034c6817896f38bfed3701184ae84 SHA-1: 2fec047b110f56aa1fc623664d6dc20251568b08 SHA-256: da455f194bbc122b56c68572e527e58d4cba9bbd9cf84199711f85544ebd590c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, disguised as a search result. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, appears to contain keywords related to the embedded URL, suggesting a social engineering attempt to drive traffic to the malicious 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://kuzutuzo.ru/strik?utm_term=best+3+ton+floor+jack+2019 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494432/normal_5ff5bdf796fcd.pdfIn PDF document text
    • https://cdn.sqhk.co/woxekivepi/cL6engg/bizagazalugeb.pdfIn PDF document text
    • https://cdn.sqhk.co/fovipobex/aMhchjK/free_phone_chat_rooms_for_singles.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408875/normal_60240637a5adc.pdfIn PDF document text
    • http://lowafax.22web.org/42495811046.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/tosego/inventory_count_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/butler_parker.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/count_if_sql_reporting_services.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee79a5e5-a13e-417f-beee-2e40663e2413/66396670075.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/assam_university_silchar_application_form_for_registration.pdfIn PDF document text
    • http://memamawu.onlinewebshop.net/katefujadanurivekarifuwus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e627c6b-e512-4d94-a868-22666e25fa86/28701720734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffb732e5-1114-457b-9ed7-ed44946e912d/zibeviworowoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6e220df-6def-47a5-b83c-38d33b119182/rain_bird_5000_mpr_nozzle_chart.pdfIn PDF document text
    • http://rulakilelakeze.epizy.com/magni-_tech_industries_berhad_annual_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/foxama.pdfIn PDF document text
    • http://wowisosanazo.rf.gd/carnatic_music_book_telugu.pdfIn PDF document text
    • http://bojepudadadax.atwebpages.com/6703685262.pdfIn PDF document text
    • http://dabemekos.epizy.com/89299763695.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_off0000de6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6A 5708 bytes
SHA-256: e99948a3bf86d08b437e5a87810dfc8f4230b4415ee92541625231b855e9a2a3
font_01_sfnt_off0000f1e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E7 10776 bytes
SHA-256: a299845b1f2fb883f013865ebf530a55b43cc60816d18b379a8ad319ffc3b150

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