Malicious PDF — malware analysis report

Static analysis result for SHA-256 e42f04504e838cb5…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 23:00:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7ce6912af4fbc6a7c89b844c4095e620 SHA-1: 16b31e5b0509a2bbeda884c48164bded42333203 SHA-256: e42f04504e838cb5d7c8bcb72304fb4c541b6f3d7d90c803e150b55249d3d344
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 0.9865

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/coin-master-daily-free-spins-and-coins-game-hack PDF link annotation
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/picture-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-got-talent-hack-piano_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/ear-robux-free-no-scams_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-114-4-download-free_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
stream_004_off00004ed2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ED2 25452 bytes
SHA-256: 2aed7adf0c685045155d30b6fab689747ebc2b4dcbc467956f6eb4d9ee987019
font_01_sfnt_off00008983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8983 18480 bytes
SHA-256: 323fea871d3154f9ddf991b22fd859b77165b4ee4e2d03de0fe4666202988bbb

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