Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9bc64a67dd65912…

MALICIOUS

PDF

78.7 KB Created: 2021-05-05 11:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 97e523c1a346ce903c80d75629c5140a SHA-1: 90e4b61a9ae1cb4521daee45c62d2c10e6c01d79 SHA-256: e9bc64a67dd65912fe07cfa1da44f50391f2f6fd9ec6a243a80cf2bf99071da0
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically pointing to 'https://dugedepap.ru/strik?utm_term=essential+elements+2000+flute+book+1+online'. This URL, along with another suspicious URL 'http://coolvdomaion.online/dudijfkxvw.pdf', suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing.

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://dugedepap.ru/strik?utm_term=essential+elements+2000+flute+book+1+online PDF link annotation
    • http://coolvdomaion.online/dudijfkxvw.pdfIn PDF document text
    • https://cdn.sqhk.co/kusasuzona/Lhhhdij/38492041301.pdfIn PDF document text
    • http://onlinetiser.website/how_to_reset_a_firex_smoke_detectoruym6l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_602057f2024a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481676/normal_5fee292b94b6b.pdfIn PDF document text
    • https://cdn.sqhk.co/sepetoxofaw/hdrzChi/zekodosakusifixok.pdfIn PDF document text
    • http://ilkertr.shop/wuwibexaraw2g13d.pdfIn PDF document text
    • https://cdn.sqhk.co/jekurona/chebz0F/mcgraw_hill_companies_worksheet_answers_history.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/ghhi3hd/94348844659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414164/normal_6055cda42a6ed.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/bivanud/epileptiform_discharges_are_not_appreciated.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/android_studio_fragmentcompat.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/what_is_virtual_memory_simple_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e762801a-739f-4fee-be17-e11a84e07f8e/crusader_kings_2_mods_a_game_of_thrones.pdfIn PDF document text
    • https://s3.amazonaws.com/wakuzidi/47514356458.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/unication_g5_pager_antennas.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/jivugulunurasuvelet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3bd6f0e-44ee-4570-ad44-0ff6b56bda79/how_much_do_you_get_from_monat.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/emotional_saiyaan_full_hd_video_song.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_off0000f5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C8 5304 bytes
SHA-256: 3735f24c8ce5a0011df71fd76ee2f8d1dfbc8d072a7110425c96a0d14b3fb841
font_01_sfnt_off000107ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CE 10984 bytes
SHA-256: 1e247689f5d3a61e18e019417d8ada2e940dc030300ff4a0f0a57b455c1eff9c

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