Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5bb846fdf135315…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 11:43:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7b32580a68f783f4e23b88c1800b40a3 SHA-1: 104f269f1023a20170a299f8531bfda8479aba2f SHA-256: d5bb846fdf135315a598e0e1ca32d0bf03aae1c7f81f857ea2c019f7b5c4060c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free in-game currency, specifically targeting Roblox and Coin Master players. It contains multiple embedded URLs, with the primary one being http://netcdn.tw/app/431946152/roblox-hacked-version-game-hack, which is flagged as a high-risk redirector. The document's structure and content strongly suggest it is designed to trick users into visiting malicious sites, likely for credential harvesting or malware distribution. No scripts were extracted, but the PDF's nature and the embedded URLs indicate a phishing or social engineering attack.

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/431946152/roblox-hacked-version-game-hack PDF link annotation
    • http://library.futureuniversity.com/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-face-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/hack-of-roblox-2021-in-game-like-counter-boxing_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-codes-october-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-a-server-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-vip-server-for-speed-race-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/robloxgiveaways-top-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/hack-for-roblox-bee-swan-sumlaitor-may_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-other-players-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/gametest-roblox-com-free-obc_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-promocode-hack-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-building-hacks_GM479516143.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_off00002e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E85 22256 bytes
SHA-256: 607c1a7afac29dd3e3f052104653642b8f2f4b9bc1a3a0e02a4ed637722828cc
font_01_sfnt_off00005fd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD4 19084 bytes
SHA-256: e30baab197ea380a830251f11993b0159206347d5302a55b978f6309ced101e7

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