Malicious PDF — malware analysis report

Static analysis result for SHA-256 17f88f942b38408d…

MALICIOUS

PDF

43.1 KB Created: 2021-06-04 03:09:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f316dd81ab743d4c61ad360fb9b12db8 SHA-1: 9f140d2070d7547ab5818bb8e44111dbf4dc5367 SHA-256: 17f88f942b38408d985ed9342a8b08bfaab5f39f2a724dbd3096d6a3a9b2100a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'netcdn.online' which is flagged as a game hack redirector. The document body and heuristics indicate a lure for game-related cheats or free items, a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/406889139/how-can-i-get-free-spins-on-coin-master-game-hack PDF link annotation
    • http://digilib.stimlog.ac.id/repository/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-but_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/tiktok-free-view-iphone-video_GM835599320.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/1x1x1x1-roblox-id_GM431946152.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
stream_004_off00004e26.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E26 24576 bytes
SHA-256: 32fb0ab4b26a8a9811fc5c3eee5557b10c50c9f43c92b6ffa122f04caed138c8
font_01_sfnt_off00008695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8695 18052 bytes
SHA-256: f4ab70c7a1b321e89283bf56011259b2481f340c7b70b557de06403c5562b8cd

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