Malicious PDF — malware analysis report

Static analysis result for SHA-256 4047645960be2f85…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 15:00:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 46d9068d6c30d81a0b97afebd63cdf8f SHA-1: e3f6c07e16bca48197f508affd01d594157adec5 SHA-256: 4047645960be2f85bcf63c64e80bfd77b5f3bc13f875da37f51fa8dc39a5421b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that explicitly lure users with promises of game hacks and free in-game currency for popular games like Coin Master and Roblox. The primary URL, http://netcdn.tw/app/406889139/60-free-spins-on-coin-master-game-hack, is flagged as a redirector for game hacks, indicating a high likelihood of leading to malicious content or phishing pages. The ML classifier also strongly flagged this PDF as malicious.

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/406889139/60-free-spins-on-coin-master-game-hack PDF link annotation
    • https://www.xenonsvjetla.com/files/hack-avatar_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-hack-tool-for-android_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-free-model-roller-coaster_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-invitations-free_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-do-you-get-free-robux-on-robloxcom_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-exploit-for-free_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-coins-in-murder-mystery-2-roblox_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/date-hack-roblox_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_off00002eb5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EB5 23156 bytes
SHA-256: a479ac344ce7c136c7f6826b974351a02819e57c4bb90d9088f693f4f9c011c5
font_01_sfnt_off000062f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F8 18516 bytes
SHA-256: 8c5d3628c5e52cadfbbdba2b83ba0bc4ebd56c681a7909424d62c65253eacfd8

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