Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bdc14dbef05b7f5…

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 04:59:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7a0343e8c9669154be59cd36191442cd SHA-1: cb164d14dd61d40cb2fc13e6ba2360c5d0c7fc00 SHA-256: 4bdc14dbef05b7f5631a3e85b7b4636e22a24624738f3a25b33c471472e6b856
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a primary URL pointing to a 'free generator / game hack' lure. This suggests the document is designed to trick users into visiting malicious sites, likely for credential harvesting or to download further malware. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or social engineering attack.

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/moonactive-free-spins-2021-game-hack PDF link annotation
    • http://stitqi.ac.id/website/repository/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/rbx-hut_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/tiktok-free-views-trial_GM835599320.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/minecraft-items_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-re_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/twitter-coin-master-free-spins_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_off0000308e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x308E 22128 bytes
SHA-256: 3f841c0ee3f49601625a2dc3f0d33cb3886efe62d0e68fafdde9afd4e6789157
font_01_sfnt_off000061b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B3 18692 bytes
SHA-256: 084863bf5d5fb3d70340a71ca5cbbb89c4187d90be14c181fecba3f04147eb21

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