Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8d5f9e13187422…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 04:29:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3388e0b84c0cf51dca4f6cb6dd72a826 SHA-1: db08c62612e6cfc674eee5adb6801efcb0384176 SHA-256: aa8d5f9e13187422968139c99c55a285ea9cd14b29177cd095bc261e2ef0df34
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-hack-tool-pc-game-hack PDF link annotation
    • https://pt-mataram.go.id/perpustakaan/repository/free-code-robux-2021_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/win1code-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-robux-and-tix-generator-free-download_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-hack-any-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-person_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-free-robux-on-roblox-2021-fast_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-spins-and-coins-for-coin-master-game_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_off000031e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E8 22740 bytes
SHA-256: 69e1813104edd346d222f8692e8e27c31cae90c963a507db1208f12a90b6918e
font_01_sfnt_off000064f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F4 18232 bytes
SHA-256: 917e2ae983eca26eb2169862b1ba82c9e587496223e189b846d8708f7cab8ef2

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