Malicious PDF — malware analysis report

Static analysis result for SHA-256 b762174fd10d372c…

MALICIOUS

PDF

55.0 KB Created: 2021-05-12 05:03:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a13d3e67fea23f8b33613d82a7b2efad SHA-1: a5ec3c149eb4773b665bfcdcb6a3bca16f5996a9 SHA-256: b762174fd10d372cb3fd95f6f8e61525e604262b8d64930e82e69d6ba5d91248
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of 'free generator / game hack' to trick users into clicking a link. The primary link, https://netcdn.xyz/app/406889139/daily-free-spin-link-for-coin-master-game-hack, likely leads to a malicious website designed to exploit the user or deliver a secondary payload. The document's structure and embedded URLs suggest an attempt to exploit user interest in online games for malicious purposes.

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/daily-free-spin-link-for-coin-master-game-hack PDF link annotation
    • https://www.dossiermedicina.it/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/what-is-a-robux_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/roblox-scam_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/rape-simulator_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-exploit-roblox_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_off00004945.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4945 26644 bytes
SHA-256: efccd3e1b2486ff8c0ce79dda5e7d1d36046ee7ecf9e7f07a9c175c6c2b572ef
font_01_sfnt_off00008798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8798 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00009263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9263 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA589 18476 bytes
SHA-256: a1e2d053ddd827b51a873b4daf81e699df0b3bac0bfbdaf6be5e73db52a20702
font_04_sfnt_off0000c815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC815 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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