Malicious PDF — malware analysis report

Static analysis result for SHA-256 39e975175d00c2a1…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 10:38:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9bc2d5003581f5f02224bdd3ef003408 SHA-1: 68698fa753b6aa80fbe60cbc21e51808fa799e97 SHA-256: 39e975175d00c2a1fd5b15c05a14fae98b9c16448c15f34254145d59947e79e9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a heuristic firing indicating a 'game hack' lure, specifically mentioning 'Coin Master'. The document body also contains a prominent URL pointing to a game hack generator. This suggests the file is designed to trick users into visiting malicious sites, likely for credential harvesting or malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/coin-master-claim-free-spins-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/rich-free-roblox-accounts_GM431946152.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_004_off000050ef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50EF 25844 bytes
SHA-256: aa815605c92b3fd2ee160aac660642978a0d1b60a9fce2079680b06b936a0fc3
font_01_sfnt_off00008cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF6 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off000096a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96A9 18220 bytes
SHA-256: 4508a7247666ecd7f475af3e2510e2d7297b60fda6d209b486c2dc6be28a63e8

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