Malicious PDF — malware analysis report

Static analysis result for SHA-256 76b354c0c9d4c04d…

MALICIOUS

PDF

33.6 KB Created: 2021-06-18 09:57:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 329c794005f077b9dba858acd3de09fb SHA-1: 1e1b6272c603bfebe32c76944b2d2b124c88bc6f SHA-256: 76b354c0c9d4c04dae706aaad1c80f9151fceec0c1989c8d5ebc86cda3acd006
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-confidence heuristic firing for a game hack lure, directing users to a suspicious URL. The document body and embedded URLs reinforce this theme, suggesting a phishing attempt to lure users to a malicious download site. The ML classifier also strongly indicated maliciousness.

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.co/app/431946152/jane-doe-roblox-hack-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/david-games-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-5-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-hacks-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-into-your-old-roblox-account-youtube_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/6x6x6-hacker-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-and-easy-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-without-downloading-anything_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
font_00_sfnt_off00002dea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DEA 22020 bytes
SHA-256: 5ff4311828adc583fb6ec72fbe1f74f481893403ba212ed6343053d157b2f04b
font_01_sfnt_off00005e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E45 18992 bytes
SHA-256: 5c7ed94c529451bdb6f2ab20e6a4c43fdfe7b587baa45638c56c3a3d7fd16646

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