Malicious PDF — malware analysis report

Static analysis result for SHA-256 a95dc8e48519392c…

MALICIOUS

PDF

35.6 KB Created: 2021-06-25 15:04:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 60cd5e666dd245026303b18875145e05 SHA-1: aaf4fa79675b70218ac39e40bdbb2c2b543ede71 SHA-256: a95dc8e48519392cbdac9411a0007eee6e4a0aa545b0a98972b50c260280d2b3
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.co/app/431946152/how-to-get-free-robux-on-computer-no-human-verification-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-scpt-site-61-admin-cheat_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-today-com_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-robux-using-inspect-element-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-redeem-credit-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hacks-for-speed-simulator-2-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-war-machine-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hack-tool-apk_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/play-store-games-free-download-roblox_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_off000031e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E7 22468 bytes
SHA-256: aafe3680636d71417012967a50bb1aff10daf9f6b1f9655b6073649677d50979
font_01_sfnt_off00006435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6435 19676 bytes
SHA-256: 35db612f4d4626cc453232a603b4d3042e128a7536f1ec62c938f679b837e6b0

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