Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c97b195d2e42e9…

MALICIOUS

PDF

45.8 KB Created: 2021-06-08 10:34:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 816be11e2ee6349386d68b4cf0887308 SHA-1: 01d5153a3800b814f21cf7f67827cfb3a67f2e11 SHA-256: c2c97b195d2e42e90ae168782832bc853b3d5f7f6b0f94ff3ebc1a4d11cdca8b
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 0.9864

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.tw/app/431946152/speed-hack-roblox-pastebin-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-people-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-do-you-get-free-robux-2021_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_004_off000052fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52FC 26124 bytes
SHA-256: 6b22d5c91a0e6d6e473966a5ed4d6d7ed29e0b2bfbad8a90e1aea0cc7e7fb060
font_01_sfnt_off00008e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9E 18908 bytes
SHA-256: a3a8b3d2d5a0c6657a5d982c6461e393e63ed8e9480cbda96c4c735481e52dc9

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