Malicious PDF — malware analysis report

Static analysis result for SHA-256 218bbc31a68df1cf…

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 23:52:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f5a2383f99a617b949c7f7349945ccba SHA-1: 465558f5e23df358c49bac032798a8766fb67f49 SHA-256: 218bbc31a68df1cfdd29585155ead42cb638e2c39d66b4ec66eddd48c57db697
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links, including one to 'netcdn.co', which are presented as 'free generators' or 'game hacks' for popular titles like Roblox. This indicates a lure to trick users into downloading potentially malicious content disguised as cheats or exploits. The ML classifier strongly supports the malicious verdict.

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/aimbot-hack-roblox-murder-mystery-2-game-hack PDF link annotation
    • http://perpus.wdh.ac.id/repository/hack-lua-script-for-one-peace-opn-seas-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-robux-for-free-2021-pc_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-phantom-forces-hack-client_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-online-game-free-play_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/cheats-and-codes-for-snow-shoveling-simulator-roblox-pc_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/dinosaur-simulator-in-roblox-hack-glitch-for-dna_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-free-robux-without-giving-personal-info_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/pastebin-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-how-to-hack-boho-salon-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-free-catalog-items-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/earn-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-online-hack-for-free-robux-and-builders-club_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_off00003090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3090 21772 bytes
SHA-256: 2411f8a72c9f7854fa53af36d4d595a76bd7afec6b0e9aab08cea2fb23f746c1
font_01_sfnt_off00006098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6098 19956 bytes
SHA-256: a7068b65e6cfd01303a7f400d45becaec0e96bcceac9522636b278bcaef0ec56

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