Malicious PDF — malware analysis report

Static analysis result for SHA-256 469d275c99afa428…

MALICIOUS

PDF

46.2 KB Created: 2021-06-09 02:35:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 82af4e1fe6e691e989b4055748216bda SHA-1: fc08408d13766e8e7b28d1bf155fd041a78bcdf3 SHA-256: 469d275c99afa42826102270e69b3de29434b11bc71c663bc928227f0791f811
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks, specifically mentioning Roblox, and redirects to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristics indicate a redirection to a potentially malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/roblox-why-are-there-no-free-clothes-reddit-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info//repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-hacks-project-jojo_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-online-free-no-download_GM479516143.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_004_off00004f29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F29 28816 bytes
SHA-256: 4b3ffb9bc32402722098d97d072ea46b3e89684dc88fe59ed329dd24eeac7acc
font_01_sfnt_off00009043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9043 18888 bytes
SHA-256: a1c434b6a13f2b2efadb53382a48ab9cef41f60511caaa87f4591fed6a150568

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