Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c0dc274e65bf41a…

MALICIOUS

PDF

63.9 KB Created: 2020-12-23 15:58:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 50f7fbf704f013ac0e0bc72b8b166ed2 SHA-1: 92e40900accd45267188fb42e8de0e302c5b02eb SHA-256: 8c0dc274e65bf41a4aab600a79d4cc5f282481e0d9a16ed7f15f88be3e899e90
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/strik?utm_term=emoji+wallpaper+free+download PDF link annotation
    • https://cdn.sqhk.co/nivuduful/BC8jhYk/phonetic_transcription_practice_sheets.pdfIn PDF document text
    • https://cdn.sqhk.co/wubumeze/jj4geih/87994058239.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424400/normal_5fa52014c1052.pdfIn PDF document text
    • https://cdn.sqhk.co/wemupaxuziv/4icgdha/velleman_function_generator_kit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401973/normal_5f9812a952ba5.pdfIn PDF document text
    • https://cdn.sqhk.co/mivesumor/CD6gdLN/46995137668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417983/normal_5fa36b9c32cf9.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/bifamomove/amcas_personal_statement_formatting.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/12695695253.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/22767142207.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/ciclos_circadianos_en_plantas.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/us_guidelines_for_hyponatremia.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/boss_katana_ktn-_100_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/pewter_city_sheet_music.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_off0000bc28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC28 5132 bytes
SHA-256: 2f65c4d5485916132ecdae4154f5d9ad67dd7f0087b66344bf47b6ce0b59c069
font_01_sfnt_off0000cd9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD9C 10936 bytes
SHA-256: 29ec7d1e06aed7f34f089aac236a744220e9d87940be858f96a47f53149e1265