Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1c69dda3b62160…

MALICIOUS

PDF

43.7 KB Created: 2021-06-08 10:09:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d9f3d906c33c8106c5d835f999944baa SHA-1: 106577a0cb5966545056de043a53a61c8e29a7f5 SHA-256: bd1c69dda3b62160e6aa95a651494a6d488ec09d3977af442c72ca6d1a2ed4ed
122 Risk Score

Malware Insights

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

The PDF document contains multiple links to external websites, primarily offering game hacks and cheats for popular games like Roblox and Coin Master. The heuristic firings indicate that these links are designed as lures to trick users into downloading potentially malicious content, possibly by disguising it as a password-protected archive. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/roblox-fast-speed-hack-game-hack PDF link annotation
    • http://projectunionstreet.com/library/repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-roblox-accounts-user-names-and-passwords-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/where-can-i-get-free-spins-for-coin-master_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
font_00_sfnt_off00004e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E01 24552 bytes
SHA-256: 078837d6b8760902146e357870559a1cce565d17c91baebc6a97fd62c8b5bcb8
font_01_sfnt_off0000867e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867E 18800 bytes
SHA-256: 088fb44c4f3f3aba80ed8629efd5bcdd1734842f62619ed90560bc1304fcd217

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