Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ca5b745d3e7a3ac…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 01:25:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 22c3dd52496e3f4079b3d96ec056b79d SHA-1: 196d71b9d541da2d13ddc64c08d09ca5b0e2a36d SHA-256: 1ca5b745d3e7a3acd7bcb06dc2d9c7d29941a73e09530f913f3e735e6d828961
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/431946152/roblox-com-r-game-hack PDF link annotation
    • http://lib.akpnbahtera.ac.id/repository/how-to-hack-anyones-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/cheats-roblox-vip_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-just-email-verification-and-done_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/june-29-coin-master-hack-no-human-verification_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_off00002dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBA 22036 bytes
SHA-256: df2b77924fab7a392a8aa0fc4bbb3fc7f73670708c44f84b729273f3b368bc9c
font_01_sfnt_off00005e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E93 18748 bytes
SHA-256: e0c33519fa3a8028980250f6ca109e7882ff4d2aa948c0cfd0792d02c3b471b7

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