Malicious PDF — malware analysis report

Static analysis result for SHA-256 676aff9c47eb8284…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 18:56:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f280befeb15775a362208f242aca31dc SHA-1: 61f51797e752aed8ffd82b1be71d82ad2461fa19 SHA-256: 676aff9c47eb8284b8da2ca20671fa3ab3e8316bad72da2105b055c7ed99bbc8
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/431946152/code-free-robux-game-hack PDF link annotation
    • http://stikgiamakassar.ac.id/digilib/repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/injecthack-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/youtube-com-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/blockland-free-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/apoculopse-rising-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/robux-games_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/daily-coin-master-free-spins_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_off00003054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3054 21692 bytes
SHA-256: faf25f3d6670567c5f478aec0735bd86906ce3bafe8ff05bd80f2855e2206ff2
font_01_sfnt_off00005fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFF 18888 bytes
SHA-256: e09a92444fffebeeb998468a77a403de4618986c60ca4254348b93199fa305b2

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