Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7d4b76eddaafd6…

MALICIOUS

PDF

49.4 KB Created: 2021-06-11 03:52:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7a27120eda5b5ed9d5c5b04f729e8c8f SHA-1: 0b9a7f8ef62130fff086f5e0ffe917e0dd5e10a5 SHA-256: cf7d4b76eddaafd6bbbf4785258cfdc5e9b1865d785963f48ada8171e33b7162
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-risk heuristic firing for linking to a game hack redirector, specifically mentioning 'how-do-you-get-thengs-in-roblox-for-free-game-hack'. The document body and embedded URLs reinforce this lure. While no scripts were extracted, the PDF's structure and embedded URI strongly suggest it's designed to trick users into visiting a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/how-do-you-get-thengs-in-roblox-for-free-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-frog-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/do-you-want-free-robux-bacon_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-free-version-pc_GM479516143.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_off00005152.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5152 28588 bytes
SHA-256: 5e89c46194e29789a7a115285da6e157c8621f06c6f663e744c61ede281d06cf
font_01_sfnt_off000091cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91CB 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off00009bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC7 19140 bytes
SHA-256: e8e6506201d92ed4e4157eb027741289927a5319d1dbf2c9620bb677354882fb

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