Malicious PDF — malware analysis report

Static analysis result for SHA-256 153cab99afee0824…

MALICIOUS

PDF

49.3 KB Created: 2021-05-16 03:47:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 33f325c596c177a733a120be7e1edb7f SHA-1: aad27f45cb41defa62dd13f52bfb7f0cc2ac281c SHA-256: 153cab99afee082433df61c2f7265c81f110bd7cb5d5de2ba2ec87b7de753236
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a game hack lure, directing users to a suspicious URL. The document body and embedded URLs reinforce this theme, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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-tool-without-human-verification-game-hack PDF link annotation
    • http://interpretation-dessins-enfants.net/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cf0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CF0 24664 bytes
SHA-256: 052dc571111b2d7b83e4226108d4d83201d419d3121c3f8afba29472abdbfc5a
font_01_sfnt_off00008592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8592 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00009332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9332 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D21 18688 bytes
SHA-256: bfb5482a37b2527fc2c6c9b4f01bf6855a084aee948f18cbf4edde79c7c9bcfc

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