Malicious PDF — malware analysis report

Static analysis result for SHA-256 5342218b209a843e…

MALICIOUS

PDF

47.1 KB Created: 2021-06-04 09:52:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4e9bfdff623227051603febb532904ac SHA-1: 10d33d3398b2c20a58f0dfd37c9f50969879abd9 SHA-256: 5342218b209a843e9288e3d3c1ab02ee80c66d655e5205cc9cd673ce29de83e8
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 0.9769

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.online/app/1094591345/pokemon-go-free-joystick-mod-ios-game-hack PDF link annotation
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://perpustakaan62.smkn62-jkt.sch.id/repository/coin-master-official-page_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B4 24396 bytes
SHA-256: f3afec756b78aa95f1b8362dfb29a1fb5748b2f808272e9d5bb078875720718b
font_01_sfnt_off0000894b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x894B 3192 bytes
SHA-256: dcf9729eac2b63d209c0c3b48d8e2fa2542888e0e5f7e5a3d595266e316a5089
font_02_sfnt_off00009482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9482 18584 bytes
SHA-256: f8585b87abac7bc95bd8274bf13223038111814ce563a6ab925d9d5a3c5299e7

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