Malicious PDF — malware analysis report

Static analysis result for SHA-256 38905da77ad58136…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 22:29:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 90253f0acf070e9cee8260fb17b47b07 SHA-1: 3fde2ae923463c145a77110a332fa906e46bf0db SHA-256: 38905da77ad58136aba6dac0dc13fd31e075b48ba1cbe628ebbfadc5c879421b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure for a game hack, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves tricking the user into clicking a link that likely leads to a malicious download or exploit.

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-hack-version-download-2021-android-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-do-you-get-robux-on-roblox_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_off0000534e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x534E 24288 bytes
SHA-256: b129211e18c58c27d81c1e61fcca75c99da338c43d335e050c1186e9aaf3fb8b
font_01_sfnt_off00008ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB6 18832 bytes
SHA-256: cd0ec0ee3d6d2e78cc0295f59590dfb899d6956e54506a4c66f347aa13d8e697

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