Malicious PDF — malware analysis report

Static analysis result for SHA-256 40a7cf5226ce14a1…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 12:41:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d1a594bc15d9c330182d9463c0449568 SHA-1: cff176f1de4bae7ef16522415de955a2b6a5e3ff SHA-256: 40a7cf5226ce14a1a0a3a04589ad56adbbc83221a112f224fcce03bc44258103
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on 'free game hacks' for Roblox and other games. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful sites. While no scripts were explicitly extracted, the nature of the lures and embedded URLs suggests a social engineering tactic to trick users into downloading malware or visiting malicious websites.

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/431946152/free-roblox-clothes-boy-game-hack PDF link annotation
    • http://library.futureuniversity.com/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-codes-on-tablet-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-magic-training-wand-free_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-800-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-today-glitch_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/best-free-exploit-roblox-pain-exist_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-800-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-only-working-today_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-watermelon-shark-for-free_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/dayz-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-no-gift-card_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_off00002f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F22 22636 bytes
SHA-256: 8fb719c90245d69f5fcf9ba8d05e22c4e266b2ce5aedab6949acb8eb835161c5
font_01_sfnt_off000061ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EC 19100 bytes
SHA-256: 28341dbcda454e7340ab8e334eac74836881bfaf0e9a0fabd5c9f748827b7a34

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