Malicious PDF — malware analysis report

Static analysis result for SHA-256 786b956498615438…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 10:22:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e782b63c0a4bfe756ab6ffe2a252211b SHA-1: a3d6027ccd4351e21a14e1db4e73a4650f844afa SHA-256: 786b956498615438cc65ec525c4d3eae349118348e88279e405ba48fb08b27f6
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/406889139/apk-hack-coin-master-game-hack PDF link annotation
    • http://ebook.itn.ac.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-free-robux-no-survey-or-download_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-roblox-rip-offs_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-games-2021_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-free-download-for-computer_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/clean-master-coins-hack_GM406889139.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_002_off000030a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30A9 23036 bytes
SHA-256: 787b6ce0ba7ddb66aee2f3dc0002e3bfefb67eaba5868d7410e0e514478f68c7
font_01_sfnt_off00006477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6477 18180 bytes
SHA-256: bbc4eac059efcf8bf1e74c2581f3a6bb8c6757dc141f09cf3b32e8008e1b5aa4

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