Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb29983e78c2dc6e…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 09:22:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 519fa0b9a40a301d0328ad4894094887 SHA-1: aa230a53b27e0ab6707daddedda2fa4339552775 SHA-256: fb29983e78c2dc6e557139c77361b72deb4d2785337dff3578eaf53b09c9dc47
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/479516143/free-minecraft-skins-java-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/any-roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/tiktok-free-like-and-followers_GM835599320.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-robux-items-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/jai-recu-mess-me-i-hack-your-place-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spin-today_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
font_00_sfnt_off00002fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE8 22132 bytes
SHA-256: 59aef6f7491a6e8e95defb3af31e5cff4bf46231c90b5b6f4a35fb4891e01dce
font_01_sfnt_off000060cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CB 18304 bytes
SHA-256: 401eb49ff2a7bbc2c0a7320b67dbf183b2d718a040190e5e2c5f0615a3ea9473

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