Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4888f333a3c678…

MALICIOUS

PDF

48.3 KB Created: 2021-06-04 01:59:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 36ae6f36825779a706ae1f8bd424b5d1 SHA-1: b9b029e289196ac66c831d8abaa5ff35d6f2c76b SHA-256: ea4888f333a3c678f670f30897f57dd1c553d3fcfc85ed11fb8f24d0d0a6adf3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure related to game hacks and free generators, directing users to a malicious URL. The ML classifier also flagged this PDF as malicious. The primary IOC is the external URI that likely leads to a further stage of the attack, potentially a download or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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-java-free-trial-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/static-moonactive_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-daily-spins_GM406889139.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
font_00_sfnt_off000056bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56BF 25668 bytes
SHA-256: 2868de3f2addfe692fb60108f75881ac0338d9850e0f9dc5593714553c59d5f2
font_01_sfnt_off000090a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A3 3288 bytes
SHA-256: c98d2b0761243bf7f184c88650cff57b842a006a5be3d6e910a2e8eec3d1f4a7
font_02_sfnt_off00009b7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B7C 17924 bytes
SHA-256: d296bfe87a6dc97e41f58611965175a9d8d851c6709ce0e2d245db43bc469752

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