Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee83aaac80b6295a…

MALICIOUS

PDF

55.2 KB Created: 2021-05-13 14:50:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5a1f03a318bf99e479b0bcdeb28e173f SHA-1: 317b5684606be9b3cfb2d94b964b2a12d6dbfe85 SHA-256: ee83aaac80b6295a8e45247000338adcaae9ca3fecfc627db7d9059e4362cdb8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to game hacking, specifically targeting popular games like Coin Master and Roblox. The primary URL, https://netcdn.xyz/app/406889139/how-to-hack-coin-master-game-without-root-game-hack, is flagged as a high-risk redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to redirect users to potentially malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8531

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/how-to-hack-coin-master-game-without-root-game-hack PDF link annotation
    • http://balkanin.com/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/www-robux_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://balkanin.com/images/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4F 26320 bytes
SHA-256: d1bf589288016b1fb820709592341195dab6ab75b258ab9101c45bc9c6b33821
font_01_sfnt_off000087ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87AB 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00009276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9276 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a59c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA59C 18644 bytes
SHA-256: 5b0b6c654ae884b7a351bf787d45d43166c87cb8727a18cb45f58fffc41445c6
font_04_sfnt_off0000c897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC897 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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