Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c3b99125c3f6f3…

MALICIOUS

PDF

71.6 KB Created: 2021-02-15 21:23:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b92aebfb7866265baaf768f9d83abaaa SHA-1: f45f74b891924318deaa8c91f4b05f561dd71964 SHA-256: c1c3b99125c3f6f3d1bc0f8e1fef230d8cf59a217f080c31b95eae7605242f98
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=the+wind+in+the+willows+movie+1987 PDF link annotation
    • https://cdn.sqhk.co/ronobiberagu/1hu3r6Z/zatupuwubudixux.pdfIn PDF document text
    • https://cdn.sqhk.co/wemonamo/hXhdtje/flappy_dunk_mystery_skin_7542.pdfIn PDF document text
    • https://cdn.sqhk.co/nifijagik/hgdja4K/70841415451.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/dGCITjd/the_communist_manifesto_summary_chapter_2.pdfIn PDF document text
    • http://wubosilafusim.iblogger.org/pujixosajo.pdfIn PDF document text
    • https://cdn.sqhk.co/jogeguzotire/ibjiTgh/bricks_breaker_infinity_mod_apk_unlimited_money.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://teposowadu.rf.gd/11299150271.pdfIn PDF document text
    • http://zaxutakizet.epizy.com/xiruxabudivimizugegavug.pdfIn PDF document text
    • http://mimegovo.epizy.com/9464461300.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/catholic_daily_bible_reading_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/believer_official_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/27010503256.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/keynote_advanced_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/ninejinafamosiranakelu.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/sapna_choudhary_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/blasting_and_painting_handbook.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_off0000daa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA1 5340 bytes
SHA-256: cb23cd29ca0d7b9dc1cb76eb48df60e8e3877186a52f1825bd297bb25be017af
font_01_sfnt_off0000ecce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCE 10728 bytes
SHA-256: 35c9110f014f294ee6266eda41f7ee35d2511f268b6f94f052e5b90e29eeaf05

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