Malicious PDF — malware analysis report

Static analysis result for SHA-256 929ff1ee7c556aa6…

MALICIOUS

PDF

48.2 KB Created: 2021-06-03 05:23:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2bfad5313a4a84986629fb6393f203e4 SHA-1: 281498fd5be077a515fce38e752b413686036d1a SHA-256: 929ff1ee7c556aa612df55c35cef665e8f6fbb6f1f3b8dc70faeb8cb187ed122
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacking, specifically 'How To Hack Roblox', and links to a malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/how-to-hack-roblox-game-hack PDF link annotation
    • http://library.futureuniversity.com/repository/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/oginject-co_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-coin-master-spins-for-today_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_004_off00005455.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5455 25756 bytes
SHA-256: 8471cf96cbb2cc56d6c07145c8cbe9e4a1b221eb546e8a22e84d43880be960f3
font_01_sfnt_off00008fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC0 2812 bytes
SHA-256: 869414959d7b492e0f799b560e1731e3ab498bd286c28e9f0d2ec33d9b6cf53d
font_02_sfnt_off0000995e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x995E 18344 bytes
SHA-256: 73440050ee62d9c8dc97d7cf0d13859b5ca63a66159f36279ab18a86d0bf293f

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