Malicious PDF — malware analysis report

Static analysis result for SHA-256 6315863f7ca96be8…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 11:15:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9efe19c8012dce8edc02fba17cd71c14 SHA-1: d50fc2e54313df7fdd9e019215b18a3102577084 SHA-256: 6315863f7ca96be8695ad142ff2715264954cefd1d06d9cde14c4aa64dcb7e32
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and document body text promoting game hacks and free in-game currency, such as 'coin-master-free-spin-realme-products-game-hack'. This strongly suggests a social engineering lure to trick users into visiting malicious websites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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/coin-master-free-spin-realme-products-game-hack PDF link annotation
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-hack-2021-download_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/hack-roblox-kewlaid_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/instant-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-do-you-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-cheat-in-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-bubblegum-free-dogcat_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/robux-live-stream-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/tarjeta-credito-hack-para-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/i-just-got-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-easy-steps_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/pubg-uc-malaysia-murah_GM1330123889.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-vehicle-tycoon-free-money-script-pastebin_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-hack-kick-gui-2021-work-in-other-game_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-card-codes-live_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-hacks-on-roblox-streets-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-money-hack-2021_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
font_00_sfnt_off000031a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A4 22792 bytes
SHA-256: 2b35d5dc33300a2e13da800c2ad7cff9b1e9225e75f168f03408a3a999958a9d
font_01_sfnt_off000064bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BF 18976 bytes
SHA-256: 9a063faea9114050ab3b1da930e9c077db51df0f0eeb33b8a77db856b87907e7

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