Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bce9693c81bb1f3…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 21:24:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 750b7f70dac74c34b157627878697b7d SHA-1: d95a73c137e0c54e7c9e8b5ff1de8542f3003560 SHA-256: 7bce9693c81bb1f3acca723ebb97f2eeb3f0461297dd47147571e67351e9ab81
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/free-minecraft-skin-packs-game-hack PDF link annotation
    • http://lib.uho.ac.id/library//repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-roblox-script-corrector-discord_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-tiktok-followers-quick-and-easy_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-hacks-w_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/are-tiktok-free-views-hack_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/all-minecraft-handbooks_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
font_00_sfnt_off00003065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3065 21896 bytes
SHA-256: 3a311780fcbf16f790c97ae36dd5feb50177a590010896ef15f0aca62db5f282
font_01_sfnt_off000060ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AC 18180 bytes
SHA-256: af546ec7d16cdc8db8a545ddb361d3216713a52e8bef528030956627ce368622

Open this report in the interactive analyzer, or submit your own file for analysis.