Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c543ea721e8caf…

MALICIOUS

PDF

45.4 KB Created: 2021-06-10 13:33:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: da9ee749d58f20bc2bd7ac496a9877c9 SHA-1: d999649149dc875e6851c72006a3e07311c03742 SHA-256: 59c543ea721e8caf84e3a5bd6b42745bed6830796d3e2fc3b63e5ec32c126231
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack redirector, specifically targeting users interested in 'free boat ride Roblox funneh game hack'. The embedded URL, https://netcdn.tw/app/431946152/free-boat-ride-roblox-funneh-game-hack, is the primary indicator of this malicious lure. While no scripts were extracted, the PDF structure and the nature of the lure suggest an attempt to redirect users to a potentially harmful site, likely for credential harvesting or further malware delivery.

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/free-boat-ride-roblox-funneh-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/como-hackear-cuentas-de-roblox-sin-programas_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/today-free-spin-coin-master_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_004_off00005307.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5307 25140 bytes
SHA-256: 89f9115ca40f43e5f1381415080cb302403c1eaf158d8753652448acf29cef32
font_01_sfnt_off00008d5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5C 18880 bytes
SHA-256: f5b0c852f0d0a5d1355af49aa0185503e97b1debde343304bdf32e30ec13153c

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