Malicious PDF — malware analysis report

Static analysis result for SHA-256 c33a3eab31ecf052…

MALICIOUS

PDF

74.6 KB Created: 2021-01-17 05:17:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7d0d7670d09f60ff02a4a9a541ec4e4f SHA-1: 56139011b1ca98ed87a7eed1e8753910bb861306 SHA-256: c33a3eab31ecf05262143dedf04840321b4da44bd9319badc6d348aaae9c66bc
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 website disguised as a "Snapchat story saver website". This is a common phishing tactic to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, and the PDF structure suggests it's designed to exploit users through this lure.

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://traffset.ru/wb?keyword=snapchat%20story%20saver%20website PDF link annotation
    • https://cdn.sqhk.co/tivuzofep/rkgicja/e_pluribus_unum_coin_value_2000.pdfIn PDF document text
    • https://site-1196306.mozfiles.com/files/1196306/22869252799.pdfIn PDF document text
    • https://site-1167954.mozfiles.com/files/1167954/people_nearby_telegram.pdfIn PDF document text
    • https://site-1168374.mozfiles.com/files/1168374/top_scorer_2020_21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401985/normal_5fcafa65a9a6a.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/vonutavekip/regression_analysis_spss_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/netukuzutexonogejezuxasa.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/2019_nissan_rogue_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/worksheets_changing_fractions_to_decimals_and_percents.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/common_nouns_worksheet_with_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/kashmiri_bhajans_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/16844718360.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_off0000e5bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BD 5488 bytes
SHA-256: 8b91d02d49ab9be0296b98058d22fb5f9b8eeac2aacb90b52e5c496d7eb25411
font_01_sfnt_off0000f875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF875 10956 bytes
SHA-256: 25f4618b68dd7b96fd6643216cbe7181049e047816eb4b179acf672fede65e64