Malicious PDF — malware analysis report

Static analysis result for SHA-256 dabfc3f5b990abc5…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 01:53:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2947d42cc3acf988f8c54351bcdf8b83 SHA-1: 742f5a8a54170d7103bf0b18e28f146066d6e8e0 SHA-256: dabfc3f5b990abc501bda139682a7a0e6e47a3c75a5cff486b6f470f29c81875
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a heuristic firing indicating it's a game hack lure. The primary URL, http://netcdn.tw/app/406889139/how-to-win-attack-madness-in-coin-master-hack-game-hack, is presented as a way to get game cheats. This suggests the document's purpose is to trick users into visiting a potentially malicious site that may host malware or phishing content.

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/how-to-win-attack-madness-in-coin-master-hack-game-hack PDF link annotation
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/what-is-tiktok-make-your-day_GM835599320.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-roblox-shirts-templates_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
font_00_sfnt_off00003327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3327 22988 bytes
SHA-256: 3a3f1985344edba3ad736acb413dc73af81adb8ae24f09fe21e0ea5b3417026d
font_01_sfnt_off000066dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66DD 18540 bytes
SHA-256: 18b2b198db32dc7e7e623373eb0fd3d036bd651e1aea8149d070f329f11c896b

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