Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f0426f4adae37b…

MALICIOUS

PDF

44.4 KB Created: 2021-05-11 06:00:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2b9defaf06d02835ea86e6a95827d07f SHA-1: fa3c4f25049a21416e9e4d9dec17ae07d7bb0746 SHA-256: d2f0426f4adae37be72f0725004e675b2fe6bc061eeee6ab2022d4a36fb82a0d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that lure users with promises of game hacks and generators, such as 'www-coin-master-game-hack'. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's a game hack redirect lure. The embedded links likely lead to malicious websites designed to download further malware or conduct phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/406889139/www-coin-master-game-hack PDF link annotation
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.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_003_off0000499a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499A 24800 bytes
SHA-256: 7ad7408ab9f7430d98cbb7d6950f4c197cd08f43a8a28efa8d5759af3cd8a005
font_01_sfnt_off000081d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D5 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBF 17908 bytes
SHA-256: 6f31903e710e2f0fcec5102e216c8b2505ef46bc9ceeb62cc07342564c5c8e6e

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