Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe372cf5b2ddd65c…

MALICIOUS

PDF

36.6 KB Created: 2021-05-21 11:05:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b33b0dedda0271416e636cdd3f60169a SHA-1: e30f061f829a25c019cdd1175ba19e76233c401c SHA-256: fe372cf5b2ddd65c342ef8b89cef0abccb5ffb8932c24a219b86531240f2eb9f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a prominent call-to-action for a "Coin Master Free Spins Daily" generator. The primary malicious URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-daily-game-hack, is flagged by heuristics as a game hack redirector lure. The document body, though partially garbled, reinforces this theme and includes the malicious URL. The presence of embedded URLs and the lure suggest an attempt to trick the user into downloading or visiting a malicious resource, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9616

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/406889139/coin-master-free-spins-daily-game-hack PDF link annotation
    • http://bentoking.co.uk/media/storage/editor/files/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/roblox-gift-card-free-codes_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
stream_002_off00003305.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3305 25500 bytes
SHA-256: c1d73ed4dda62d55b328688eeadc0bbdd5021912d975cc568248febf81c68591
font_01_sfnt_off00006d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D95 18308 bytes
SHA-256: 220bb6194b1ab8a2bb399ca4a862914ac8d15b354bb0df2c737bc67699221dc9

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