Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d66ebacc771a46…

MALICIOUS

PDF

55.8 KB Created: 2021-05-11 01:06:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9e3865a46511f12d672e4035810a48e1 SHA-1: de747ab81dda82a3ccb9df23bebd7d0cf08b6ccf SHA-256: b6d66ebacc771a46588e3474af013aac63cf50f15fd9a897e76c6545017025ee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to sites offering game hacks and free spins, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of numerous suspicious links suggests the document is designed to lead the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8407

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/coin-master-free-spins-link-blogspot-april-2021-game-hack PDF link annotation
    • http://bemviverclin.com.br/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/original-roblox_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a14.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A14 27836 bytes
SHA-256: 97f59db4dbf4674d45d432c330249c72c9918b2b82420ce125159b9a2bb2c150
font_01_sfnt_off000088e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E8 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off000093b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B3 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D8 19036 bytes
SHA-256: abaaef8123abf70c91d1a0f07b1f9da735168a40db37009f502544eec5993ff1
font_04_sfnt_off0000cb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB32 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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