Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57c0dd95d6b8dec…

MALICIOUS

PDF

36.3 KB Created: 2021-05-24 19:03:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6509fcb7ad0e0b1e7bf2d70e452de946 SHA-1: 8b7c8d739c0c48cc58db8f4a328e3ac1c63bb5ca SHA-256: e57c0dd95d6b8dec961d7f46eb806ca140cacb30d36df435f85dd74b86cd19bd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs and a heuristic firing for a 'free generator / game hack' lure, specifically mentioning Minecraft. The primary URL, https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-phone-game-hack, is likely a redirector to a malicious site or a download. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs suggest an attempt to trick the user into downloading or executing a secondary payload, potentially exploiting a client vulnerability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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 https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-phone-game-hack PDF link annotation
    • http://lib.untad.ac.id//repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/get-minecraft-windows-10-free_GM479516143.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
stream_002_off00003593.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3593 24812 bytes
SHA-256: d6bf933e7d64ad72d02df9daf540942e53054cba670ca1de8f22877c621be813
font_01_sfnt_off00006d42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D42 18192 bytes
SHA-256: 90b6a34edb34d309cd556a6b23817db9766b775643cedc81c4ce7203f03c64d4

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