Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8de9f5e85a582d8…

MALICIOUS

PDF

70.3 KB Created: 2021-01-10 20:53:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 448d3dd48c42ae3704d8913f0d4ef76f SHA-1: 751b40b88963ed0ec8d7c284a4f538aba75c4950 SHA-256: e8de9f5e85a582d844ba53bd7676054be2aa93a8bb8b61b31f841e598da7fc56
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to relate to a coin auction, suggesting a lure for fraudulent activity.

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://trafffe.ru/123?utm_term=1965+churchill+coin+ebay PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407724/normal_5fe0c9c20aa68.pdfIn PDF document text
    • https://cdn.sqhk.co/podiwilur/iigZjdP/kefewavoxajojovexuxova.pdfIn PDF document text
    • https://cdn.sqhk.co/xadowififux/Ngj3je3/alien_apocalypse_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/pujunuzivas/5igbEid/danononefulewuzevibepuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479705/normal_5fb777366aba2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421476/normal_5f9b805fda425.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376609/normal_5f8d3bbd2f862.pdfIn PDF document text
    • https://site-1172092.mozfiles.com/files/1172092/jumpstart_mtg_booster_box_price.pdfIn PDF document text
    • https://site-1174029.mozfiles.com/files/1174029/kajaruvosinolejonudu.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/hqge6LU/room_escape_contest_2_level_28.pdfIn PDF document text
    • https://cdn.sqhk.co/diwomijo/Ur07dDo/fegaxabobibevunixefuli.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/jbvheca/banamomijimutemorupobodoj.pdfIn PDF document text
    • https://cdn.sqhk.co/rurokusulos/MjiEjdA/japanese_alphabet_chart_with_english.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/geradi/lasepuponikeb.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/guidestone_housing_allowance_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/cumulative_sum_in_ssrs_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/zunefaluzoneletulajutupa.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_off0000c9ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9BA 5344 bytes
SHA-256: ae540805f0b13166314bf510e643f45b52e1c8abb3c121db65f26c044f0d7f76
font_01_sfnt_off0000dbeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEB 15636 bytes
SHA-256: f4d24289fd283de0a056d1058eea5cf27e07a12d1ed592261ab3a2909d34ceba

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