Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a869c7193a7140a…

MALICIOUS

PDF

35.6 KB Created: 2021-07-09 07:19:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4efc3443c60dd9c64a9335f7eb477623 SHA-1: 481c70501873e580ea7c7b07a2a73cfb84e5d55e SHA-256: 8a869c7193a7140a3544b8672753fd866ccbbca2baa154164d28850ade0f0755
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/how-can-i-get-free-spins-on-coin-master-game-hack PDF link annotation
    • https://jormix.co.id/ckfinder/userfiles/files/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/roblox-shopping-simulator-hack_GM431946152.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/assassin-2-hack-roblox_GM431946152.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/buzz-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/roblox-cheats-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/daily-coin-master_GM406889139.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/roblox-executor-free_GM431946152.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/roblox-login-free-no-download_GM431946152.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://jormix.co.id/ckfinder/userfiles/files/hack-coin-master-no-verification_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
stream_002_off000033b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33B5 23316 bytes
SHA-256: ad86cac00689f34bce5f7267395ff2a367dafcb6a26ed1a887337806df8b5321
font_01_sfnt_off00006845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6845 18336 bytes
SHA-256: 37ca97c2691b43cd452b048f4f7c78c5ad4d0dd2b0202caad78cb0ffb9f2e73b

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