Malicious PDF — malware analysis report

Static analysis result for SHA-256 29421ceac0f5439c…

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 02:36:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 063f6a977df4249b65defd34fc7806bf SHA-1: 2e7f7e4416cd8437fb342d1efeeba97ff613f2ef SHA-256: 29421ceac0f5439c1763beb08ea7da3fd4e2252fffd3bbc1a405068459cace31
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a prominent link disguised as a game hack download, which is a common social engineering tactic to trick users into visiting malicious sites. The ML classifier strongly flagged this PDF as malicious, and the embedded URL points to a suspicious domain associated with game cheats. No scripts were extracted, but the overall pattern suggests a phishing attempt to redirect users to a potentially harmful download or exploit site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/free-download-coin-master-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/whats-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-robux-codes-2021_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_003_off00004be2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE2 24764 bytes
SHA-256: 72b8a8c3620a624be2705126561fefb052d1a7822ba52f8d1eb471c52503e1a2
font_01_sfnt_off00008450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8450 18292 bytes
SHA-256: f7e7ab01f272ced417b1f6f65c7a93c96b51da51ceb989c470a75dce226d63c1

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