Malicious PDF — malware analysis report

Static analysis result for SHA-256 c85e7d9cfdd3605b…

MALICIOUS

PDF

34.6 KB Created: 2021-07-02 05:51:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2ca0e7300e8dc2a02cfbd775110410dd SHA-1: 53f3483ce411656eeae2f7f966bbe5df9deccdee SHA-256: c85e7d9cfdd3605bbeef963a6a18ac1c8d5fdd380f9451091722bc1874e93cc0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector. The document body and embedded URLs reinforce this, pointing to a lure for game-related cheats. The primary malicious URL identified is http://netcdn.co/app/431946152/free-cash-twisted-murderer-roblox-game-hack, which likely serves as the initial landing page for a phishing or malware distribution scheme.

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/free-cash-twisted-murderer-roblox-game-hack PDF link annotation
    • https://elibrary.sttar.ac.id/repository/free-printable-roblox-valentines_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/moon-active-games_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-free-game-app_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/put-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-seven-deadly-sins-online-script-hacked_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-get-free-coins-on-meep-city-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/como-vestirse-hackear-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/h2-account-stealing-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-no-login_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-enter-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/veorra-set-free-roblox-id_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-shirts-to-make-for-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/minecraft-bedrock-edition-pc-download-free_GM479516143.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_off00002e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E93 22412 bytes
SHA-256: 51c7d6d7a05ae286e6104fd1fb6b828da8f31c9a5b990804c52609718185d2d5
font_01_sfnt_off00006078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6078 19712 bytes
SHA-256: 414ce33ea3a4bdee2df38606cc065003c7e17f5111a6a24844f9b2bf56d07f1b

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