Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2701d85995a8bb0…

MALICIOUS

PDF

36.2 KB Created: 2021-07-06 05:21:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0d0929a911d1bc63e625d1b81ba3af7c SHA-1: 6ddeb965ddf173d0850dd7a860bf4f9f29326d26 SHA-256: d2701d85995a8bb09534a205002ceea6317b1bc522bb71ff1d7a9fab2c8135cc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free in-game currency, specifically mentioning 'Coin Master' and 'Roblox'. It embeds a URL that redirects to a page offering 'free spins on Coin Master without human verification'. This suggests a social engineering tactic to trick users into visiting a potentially malicious site or downloading further malware. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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/free-spins-on-coin-master-without-human-verification-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-hack-iosgods_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/minecraft-114-download_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/cheat-indetectable-roblox-fly_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-win-redeem-code-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/jailbreak-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/athena-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-dominus-roblox-real_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/133-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/denisdaily-free-robux-website_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_off000036c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36C8 22512 bytes
SHA-256: 41e459abb8de16e4c2eeb86157fffe7222e057b0a71b6f75c0c8dee1e46f692a
font_01_sfnt_off000068f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F0 19072 bytes
SHA-256: 27ae5e168144f9143b4eb17c336d82063430b57a560ff005ec1c031da73db6d2

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