Malicious PDF — malware analysis report

Static analysis result for SHA-256 f02ed7e81c3a85e3…

MALICIOUS

PDF

49.5 KB Created: 2021-05-12 01:04:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 98a24924d15eda39f64f437b2bf017c5 SHA-1: f70cac52800d316b1bff2606b74ed6cc8534b91a SHA-256: f02ed7e81c3a85e3f57e59495754cdd93c5ad80c96c5a7d3f52cc16fbb9d25e6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are designed to lure users into clicking on them by promising game hacks and free currency. The primary link, https://netcdn.xyz/app/406889139/coin-master-spins-free-2021-game-hack, is flagged as a game hack redirector. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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-spins-free-2021-game-hack PDF link annotation
    • http://geometraperiotto.it/images/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-robux_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://geometraperiotto.it/images/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ab3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB3 24480 bytes
SHA-256: 685e1be9ee56f283fefe051f16cd8314626a681578f5a6e94b7a5b6603fab566
font_01_sfnt_off000082d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D9 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C86 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_03_sfnt_off00009e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E9F 18288 bytes
SHA-256: 41f21d94c3c0473acc3506ca33b951da9505e1643d81a04a8bd875c9ca2f7515

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