Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfd0a3a04b79144f…

MALICIOUS

PDF

45.8 KB Created: 2021-06-09 14:04:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 55ede50734a87d624458f20d89034c95 SHA-1: 7790e5ce9bcb1415091a52ad17ba832621479cf7 SHA-256: dfd0a3a04b79144f63b2fe5ea104e5a009ee6686cf50e041a4f74b5836382e1d
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/wild-and-free-serena-ryder-id-roblox-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-controversy_GM431946152.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/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/best-parkour-free-run-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/jailbreak-download-free-roblox_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_off000050b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50B2 27000 bytes
SHA-256: 2dd497bc931ff3e761fccbbd589bdd06501987bbac17cced2dbbf901c01f5101
font_01_sfnt_off00008ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE4 18848 bytes
SHA-256: 3e17c8527c96a7ddb923ab82c126b9e4274b12a83f1e48856bc429430649a498

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