Malicious PDF — malware analysis report

Static analysis result for SHA-256 caf15909f424a856…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 05:29:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5682242b6391c77a4fa898f514cf75af SHA-1: aa19d7e876fa8a3db521ce3692ce08be0d1f4593 SHA-256: caf15909f424a856d9a8896c0e8497a976926d43289bb3636115edc36d181a06
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to websites offering game hacks and in-game currency, such as Robux and Coin Master spins. The primary link, http://netcdn.tw/app/479516143/minecraft-112-2-hacked-client-game-hack, is flagged as a redirector lure for game hacks. The document body also contains a call-to-action phrase, 'CLICK HERE', further encouraging users to interact with these malicious links.

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/minecraft-112-2-hacked-client-game-hack PDF link annotation
    • http://oca.undil.tl/repository/gain-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-hack-safe_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-roblox-games-play-now_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-do-u-scamm-people-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-q-to-script-script-hack_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/nuke-hack-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/hacking-prestonplayz-roblox-account_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_off00003048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3048 22356 bytes
SHA-256: d2c75f3b55940974b1b2516fda39f7c0696106dae7c9ced58ca70ce9ade3a16d
font_01_sfnt_off00006207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 18504 bytes
SHA-256: 1c6239c4e7240bb93b61e959f2b21d4e00e02324577494d7f11381c67a244304

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