Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d40bf0491746821…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 15:35:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b4de53cba3cb5a20ec5bafa3d76b76a4 SHA-1: dabeaf68caccd8a309a5bf8f141ad49c7f4ca4a4 SHA-256: 9d40bf04917468218a2ba89709f3b0a11890c019dacdbc1f1fffba9b80bbace7
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/coin-master-cheats-for-free-spins-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-to-go-through-walls-in-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-roblox-kat_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robloxcom-robux-and-tix-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-gift-card-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-999999-robux-2021-android_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-and-keep-it-youtube_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-dinosaur-simulator-cheat-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/tiktok-free-view-500_GM835599320.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/mobile4free24com-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-mining-sim-hack-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/what-would-noobs-do-with-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-web-page_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_off00003199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3199 22680 bytes
SHA-256: 008d0a963e0ca7bf17d74aded6de24ac4240010353a4bb7f1e80f888019b89dd
font_01_sfnt_off00006454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6454 18340 bytes
SHA-256: 5b574630ba63934687ba1c5d1198d52a4a38a7938149e8912a812ffc97b040e9

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