Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9fd17aed1ad1897…

MALICIOUS

PDF

43.9 KB Created: 2021-05-10 18:00:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0bd1a5c73617525c4206c605dc3d68b7 SHA-1: c7937f8d173e796fdc98c788c16139b924f4cda7 SHA-256: f9fd17aed1ad1897e1dc350aa4eb63019fbf6ec00d607b1e709f4afdbee4e90c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristics indicate a phishing or redirection attempt, likely to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/free-robux-no-human-verification-or-survey-2021-game-hack PDF link annotation
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/wurst_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/roblox-its-free_GM431946152.pdfIn PDF document text
    • https://collectrobux.coIn 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_003_off00004b34.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B34 26072 bytes
SHA-256: 86fe9f830c61033ecfa137e78b8dd519594387441f7450fd3f2b74661403c0ef
font_01_sfnt_off00008584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8584 19556 bytes
SHA-256: 08b2a18d96b3566ec838f0e87c4bb916e955b8f8af04b9064418114d078945b8

Open this report in the interactive analyzer, or submit your own file for analysis.