Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8cb2ef8cbd394e…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 19:25:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d5e6cb2252bdfb1d29ea0839a30937c5 SHA-1: c4f9293771f0fe73493f748e6e173c5d4c002993 SHA-256: 1f8cb2ef8cbd394e6efc926021a82284bff20041feaa8f9b39a0f9cd686097bf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacking, specifically for Roblox, directing users to a suspicious URL. This URL, 'https://netcdn.online/app/431946152/how-to-hack-people-in-roblox-game-hack', is flagged as a high-risk redirector. The document body, though heavily obfuscated, contains references to game hacks and the same malicious URL, reinforcing the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/how-to-hack-people-in-roblox-game-hack PDF link annotation
    • http://library-fkip.uho.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-roblox-robux-generator-activation-code_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/pokemon-go-free-4k_GM1094591345.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.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_off00005031.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5031 25728 bytes
SHA-256: 448e4cc37f22b5a420d8f6fd2c9a4d7859b234d2c980e4b94fc7afbcd5398414
font_01_sfnt_off00008acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACB 18676 bytes
SHA-256: 10ff19610ec10ba06ce370fdc76468137d93ed174f58c2f80433e0d310d8c060

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