Malicious PDF — malware analysis report

Static analysis result for SHA-256 200cc4cbf6a59cc1…

MALICIOUS

PDF

47.0 KB Created: 2021-06-04 02:32:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b64c49f4558f1a137b980a97d4d441b5 SHA-1: bd9d3ae61ba32e862b0832fb4f9f419b6e88102d SHA-256: 200cc4cbf6a59cc1692c1a0669798c30f68544c54525dd0134fd97d5064ada74
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 0.9769

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/robux-com-free-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/moon-active-games_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/gain-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-donation_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/client-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ede.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EDE 25216 bytes
SHA-256: 00afd22831c19fc5baa1cc1de2348c67e725c29f807f9adc4b6bf8334a4fdeeb
font_01_sfnt_off00008864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8864 3608 bytes
SHA-256: 38b270e1156baf55f52eefd6c0272d25f41d6b4ef7b6a9aa3301989c4dacee27
font_02_sfnt_off000094ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94ED 18276 bytes
SHA-256: 15a0db03ecad41b32ad15729058012b5ee1d917146ec7af3e780186d41394abc

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