Malicious PDF — malware analysis report

Static analysis result for SHA-256 b989fdf45be2bf07…

MALICIOUS

PDF

35.9 KB Created: 2021-07-05 07:47:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ffe2d58b1cc6d09983dfe2ab1bfec97e SHA-1: 0d10481ce876c2cad12eb983fee92cced6df4f3b SHA-256: b989fdf45be2bf07a25cd41452526c8021c222d1681a81d1da0041f594bb6673
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary focus on luring users with promises of game hacks and free currency for popular games like Coin Master and Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this deceptive intent. While no scripts were explicitly extracted, the presence of numerous suspicious URLs suggests the document is designed to redirect users to potentially malicious sites for further exploitation, such as malware downloads or phishing.

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/406889139/coin-master-free-spins-link-june-2021-game-hack PDF link annotation
    • http://library.stipjakarta.ac.id/etd/repository/roblox-mod-apk-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hacker-takes-over-roblox-streamers_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/getgaming-resources-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-domino-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-roblox-ban-accounts_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-boombox-highschool-2-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-games-on-roblox-that-work-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hack-roblox-a-telecharger-gratuit-pour-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/tiktok-fame-free_GM835599320.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-speed-cheat_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-download-roblox-on-computer-hack-tool_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-hack-free-no-human-verification-or-survey_GM431946152.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_002_off000032c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32C6 23300 bytes
SHA-256: 4e924f7ccbeec283f04777924e5c7ceb9f980db4e2eb2315ce1dd5984f761411
font_01_sfnt_off00006780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6780 19052 bytes
SHA-256: da088671e108859af3dc13ad18939fcd6ad3c9e33d2991314a6b018d2c6434df

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