Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4ea60d15cea0e3…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 18:51:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2c968110591e61103e2a58273a3ea1c9 SHA-1: 13b2aba824cde5f2a70dc507e7bcd81fbef3c05e SHA-256: eb4ea60d15cea0e3a419470756df5760567ca2fdbdaed73b70c405359ffecd1c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and 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 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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
  • 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 http://netcdn.tw/app/431946152/how-to-get-free-robux-without-downloading-apps-game-hack PDF link annotation
    • http://educhina.mn/editor/files/free-800-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-jailbreak-hack-money-no-verification_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-roblox-redeem-cards-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-hack-roblox-god-mode_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-exploit-roblox-mega-download_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF2 22204 bytes
SHA-256: d7d3f1ae6c0caf1e50533d991c9a449b30da9a451f6158abeee8644220fcbacb
font_01_sfnt_off0000601d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601D 20060 bytes
SHA-256: 44f0105255c4bb73f6c79bc6e5489dacf7eb081798d72a7dddb9830b56c75d42

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