Malicious PDF — malware analysis report

Static analysis result for SHA-256 12bb33bf9b36bd0c…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 23:45:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d658ba6f4f40c56d998e31aba10903e6 SHA-1: 2c104ae92208a0bd948ecf8ae06f8c2d77a4fe8a SHA-256: 12bb33bf9b36bd0ce3448b4096d63126a8a8cd1cb6db4bc4f3e0a59887fb16d7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness. While no scripts were extracted, the embedded URL and the nature of the lure suggest a phishing or redirection attack aimed at tricking users into visiting a potentially harmful site.

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/hackear-coin-master-espaol-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id//repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-pc-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-lumber-tycoon-2-money-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-can-someone-hack-into-yourroblox-account-from-discord_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-online-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/appkarma-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/best-free-roblox-exploitds_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-clothes-on-roblox-on-your-phone_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-anime-cross-characters-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-cheat-in-dna-on-ds-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-legendary-swords-rpg-level-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-rocitizen-money-hack-glitch-daily-bonus-patched_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-and-get-free-robux-2021_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_off00003041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3041 22940 bytes
SHA-256: efe1de42dcac1a0d1a733063cf3fbf6f79c1a732d43e06029e5cdc38a26589a4
font_01_sfnt_off00006385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6385 18252 bytes
SHA-256: a1701d1fb432a44730dafaad2dc373a01df2a8671beb9c3eca5caf088f1719fa

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