Malicious PDF — malware analysis report

Static analysis result for SHA-256 869ec7587c58158c…

MALICIOUS

PDF

38.1 KB Created: 2021-07-05 05:44:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ddd783e55bbf31707060a0792c255da8 SHA-1: bc0522184b24be8a0dd5ebdf47b1106061e17a17 SHA-256: 869ec7587c58158c8754aa43c29f91a65ab7c07d847ad4b9ff5dde0750a0bbb3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to trick the user into downloading a potentially malicious payload or visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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/406889139/coin-master-hack-mod-apk-unlimited-spins-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-metal-detector-simulator-infinite-money-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-cheat-client-juillet-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-frog-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-to-get-free-spins_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
font_00_sfnt_off000032f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32F2 23056 bytes
SHA-256: e94f2865579bc78aee4aca9ef4525f6d44258d092950bd2462a5ec9c35493692
font_01_sfnt_off00006655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6655 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off0000703a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703A 18876 bytes
SHA-256: c71a24b620bad33a336f203fe19cb26eb375f7b6667ba01091b66d2d0e3ba746

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