Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e48df1266e15d76…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 22:21:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6fea42030412f8e16a7aaeea8882c9fe SHA-1: 4c5a68512f07a73bf9c04ab42decd16fbe868974 SHA-256: 9e48df1266e15d76550af06fc025fe26bb6ea9bb62a85079b9f3bd7d3d51b17d
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 0.9980

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 http://netcdn.tw/app/406889139/facebook-coin-master-free-spins-game-hack PDF link annotation
    • http://pustaka.fti.unand.ac.id/repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-exploit-dll-scripts-cheat-engine-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/hack-para-roblox-2021-julio_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/5-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-make-a-free-admin-game-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-get-your-hacked-roblox-account-back-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/one-punch-man-unleashed-roblox-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/youtube-robux-pastebin-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-shields-coin-master_GM406889139.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_off000031cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CB 23024 bytes
SHA-256: dbb6afce9c1e9ce8ba39994232a2eeea7a0f863bec20ffff5420909feebf7e1d
font_01_sfnt_off0000655e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655E 18504 bytes
SHA-256: 82c3e55a3f16517a0e9da98b063043b0b8ffb7837822c376f9cc5fed45eb6737

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