Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c89327ba443ef4a…

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 07:40:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dee449a00ff09b6003f80be90ce3bf66 SHA-1: fe10d5afe510abb2691a7ab803af0af08309eccc SHA-256: 8c89327ba443ef4ae64a3a1b4b57ea3e9581cf6e6df5af3f4f91caf1f408252f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The ML classifier also flagged the PDF as malicious with high confidence. The document body, though partially garbled, contains references to game hacks and the suspicious URL, reinforcing the lure tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/479516143/minecraft-skins-download-free-game-hack PDF link annotation
    • http://lib.smpn1bambanglipuro.sch.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://lib.smpn1bambanglipuro.sch.id/repository/minecraft-story-mode-free-download_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_off000053f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F6 27400 bytes
SHA-256: ccc74227aff2a8e0fd7d6b31b4370dc8c09f532a9c78618b0f144750d0a5f940
font_01_sfnt_off00009147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9147 18460 bytes
SHA-256: 54d3aeb7b3beebea3cfa48561b043312cf5d8c01a954df644a6f0691dd3f9e10

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