Malicious PDF — malware analysis report

Static analysis result for SHA-256 79466d653230ab1a…

MALICIOUS

PDF

48.0 KB Created: 2021-05-13 05:04:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e5171f0f998b7579a5fc76c22482b37f SHA-1: 68658f7a0462c2bdf5ffd83e5ba3d2e794783a54 SHA-256: 79466d653230ab1a8478ebc8b4a8d68c09c98d2043c50fdf87a9fa3fb57515b5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and a high-confidence heuristic firing for a 'game hack' redirect lure. The document body, though partially corrupted, also contains a URL related to game hacking. These elements strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for credential harvesting or malware distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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-hack-using-lucky-patcher-game-hack PDF link annotation
    • http://tileworld.com.au/files/rbx-earn_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/www-free-robux_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-free-robux_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-daily-spins-coin-master_GM406889139.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_off00004b31.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B31 29824 bytes
SHA-256: 09a82eac6b2caf910d90cc1f5a675a6cf1eba6753747978b20963a93b1869b05
font_01_sfnt_off00008d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D92 2928 bytes
SHA-256: 0bb26577d52c8d51e00ad4edc5eaecc41f30204c62dca387b29f5eedfceecc2d
font_02_sfnt_off000097af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97AF 18832 bytes
SHA-256: 2cd4bfabdd56e5db7574a9ce92a7cad7f1521c02cad56c3759cae2546db8459f

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