Malicious PDF — malware analysis report

Static analysis result for SHA-256 a47ea9faf2c70296…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 12:58:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8611852ee112990357833b1846fe2f9a SHA-1: 65b3317eb89de41c51524f55ed59c0198999a365 SHA-256: a47ea9faf2c702968ca5ea56686dbcbbfb31b16fd02ac376cc312c5e4e00310b
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 0.9980

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/479516143/how-to-get-a-free-minecraft-account-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/comment-avoir-des-robux-gratuitement-sans-etre-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-generator-fake_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/growbux-free-robux-app_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/get-free-robux-if-you-finsh-ths-obby_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-on-pc-october-24th-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/best-groups-to-join-for-free-robux-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-gift-card-redeem-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-accounts-with-obc-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-robux-2021-easy_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_off00002fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB0 22284 bytes
SHA-256: 338957b479b9c483cdae4a603dcc2112db2b068cbcaf64bcfa18a1166ab77857
font_01_sfnt_off000060f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F5 18300 bytes
SHA-256: 42a02714a255c5483bbad6f3be0925a809022fd1c414ca09bcf2d9d784a4176f

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