Malicious PDF — malware analysis report

Static analysis result for SHA-256 38fe12adfdd22b14…

MALICIOUS

PDF

47.0 KB Created: 2021-05-12 08:01:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4833691c39dc756c8292ce9fd43cbfb1 SHA-1: d1c8ecf680c4b0e0518df6c0bd1cef9d8497d375 SHA-256: 38fe12adfdd22b14fee7692a2ade9245685bdad9eaddf6df8dc0787f70a4d034
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a primary redirector URL, all related to game hacks and free currency. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a social engineering tactic to trick users into visiting malicious sites. Although no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, aligning with T1059.007 if JavaScript were present, and the initial lure is characteristic of T1566.001.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-spins-on-coin-master-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-in_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ba0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA0 27696 bytes
SHA-256: bf028d3ea7ccbf771c7e581667588fc4cad813ee3cd1f43ea76d0c559e22f0de
font_01_sfnt_off00008b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B78 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off000096a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96A2 17884 bytes
SHA-256: addbd5428a422ca7211e94293fed3a4f98c85d5f6337328d4d3623e90d90c649

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