Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb578dd2bc918159…

MALICIOUS

PDF

32.8 KB Created: 2021-06-28 06:21:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: aad440442dbd74c1404bec986942facf SHA-1: c29454ac45c8dd41a7eb6a26d755de740fa91b61 SHA-256: bb578dd2bc91815951a0039b515744b8f433dae636d301384e4a0a87a7db861c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that lure the user with promises of game hacks and free in-game currency for popular games like Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/can-i-change-back-to-old-roblox-name-for-free-game-hack, is identified as a redirector to malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a phishing or redirection attempt, likely leading to a second-stage download or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/can-i-change-back-to-old-roblox-name-for-free-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hacking-roblox-jalibreak_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-full-game-free-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-make-a-dll-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-strategy_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/is-bloxburg-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-download-pc_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_off00002a17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A17 21940 bytes
SHA-256: 434a445624a867626e7281fe915838e0a8abff6848f8eeda84fdcec6a2340bee
font_01_sfnt_off00005a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A90 19420 bytes
SHA-256: fe0f1877a3bf6d2a970ba4360b20056fa4b9e2976fe571cf266d344cba718b1a

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