Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae3e6c5ffa0d7ba…

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 04:57:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e79b6f8897356da53b6aeb587d95561c SHA-1: 1569e92489c93f86dc128318ecd3164c0929a0d9 SHA-256: aae3e6c5ffa0d7ba56edfa607251c19ede581d4721085e51323758c243a86de1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body also contains this URL, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent. No scripts were extracted, but the primary attack pattern involves social engineering through a fake game hack to redirect users to a malicious 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/coin-master-hack-tool-game-hack PDF link annotation
    • http://lib.stie-aub.ac.id/repository/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robux-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/cheats-for-prison-life-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-blox-burg-money-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-level-7-script-executor-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-hack-roblox-and-get-meep-city-coins-fast_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-400-robux-code_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/adopt-me-roblox-building-hacks_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-easy-and-fast-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-a-group-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-hack-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/regal-world-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_off00002f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4F 21924 bytes
SHA-256: 91335cb1dc396341743a1f11ffcb846cd4ee99a3bdd81adb0edd3c631a9b6f60
font_01_sfnt_off00005f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9E 18080 bytes
SHA-256: d73e4cba5eae4963415d942f6085a7e87ee20f191a57df75a2e3d628f5bdbb21

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