Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a49da407e5413bb…

MALICIOUS

PDF

33.9 KB Created: 2021-06-30 00:04:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c9460a5d069b38f75cf5ebbbdf51f045 SHA-1: d63f7cc3bb28bad47631c88b4910d4c4ee1d750f SHA-256: 4a49da407e5413bb2ca572ac0a3e15bcb4c9ea5718de275f5b8843f8d0bf04e3
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/phantom-forces-hack-roblox-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan/repository/roblox-jilbreak-money-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/robux-place-rewards_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/cheat-engine-67-download-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-counter-blox-hacken-aimbot-wallhack_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/pastebin-free-robux-by-agarminer_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-100-works-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-bloxburg-free-game_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/earn-free-spins-in-coin-master_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_off00002ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA3 21800 bytes
SHA-256: be592e975b7a2a4daf70ed023c72639357892b831d8760f81318a56cf912c224
font_01_sfnt_off00005e6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6F 19504 bytes
SHA-256: 76b90ee2779d1b3e2e651c0e5085ee9c39989bf7ffe8413f612fc3a0e3524f75

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