Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fbf001fac935531…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 18:28:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7324edbfb1fcc0a06696abd55826c370 SHA-1: 88cbc3b0da3c335a8a43cc85db63811462397879 SHA-256: 5fbf001fac9355310bbdbdd94dd064191bf1038036606c5944ad6672834b17aa
82 Risk Score

Malware Insights

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

This PDF document contains multiple links disguised as game hacks and free currency generators for popular games like Roblox. The primary link, http://netcdn.tw/app/431946152/robloxs-got-talent-piano-hacks-game-hack, is flagged as a lure for game hacks. The document body and heuristics indicate a clear intent to redirect the user to potentially malicious external sites, likely for malware distribution or phishing.

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/431946152/robloxs-got-talent-piano-hacks-game-hack PDF link annotation
    • http://perpustakaan.dutadharma.ac.id/repository/finally-roblox-free-gifts_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-glitch-cheat_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-roblox-accounts-with-bunnle-gum-sim-pets_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-hack-a-roblox-account-with-pin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-updated-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-hacking-on-a-vip-server_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/zephplayz-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-free-shirts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-secret-site_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/lua-code-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-vip-server-for-speed-race-game-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-free-robux-on-pc-no-hack_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
stream_002_off00003240.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3240 23232 bytes
SHA-256: 0c3a2075c36d7e9169b8a117e4ed564b4dc42ed91527860ff00b756fcc633416
font_01_sfnt_off00006670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6670 19032 bytes
SHA-256: ba4eeed411d8c8a8d096b6a655960b6250b0f63a2415a433731e92c8c2d9eb34

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