Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0f72447c23d7c2…

MALICIOUS

PDF

42.0 KB Created: 2021-05-13 02:06:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c63374a2d724b34bf7ea9f2c8211d424 SHA-1: 8cd37a3b4dc0b409f9df2916e18c92ebc368acba SHA-256: 3d0f72447c23d7c2db8097726086384da394a6d6d653301c12972a4f2f3b00e7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains lures for free in-game currency and items, specifically mentioning 'Coin Master' and 'Robux'. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document requests sensitive information like private keys or passwords, which is a high-risk indicator. The embedded URL 'https://netcdn.xyz/app/406889139/how-to-get-more-spins-on-coin-master-for-free-game-hack' likely serves as the landing page for this lure, potentially leading to credential theft or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/how-to-get-more-spins-on-coin-master-for-free-game-hack PDF link annotation
    • http://www.fluidtech.hu/images/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/wurst-mc_GM479516143.pdfIn PDF document text
    • http://www.fluidtech.hu/images/moon-active-games_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004afc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFC 24688 bytes
SHA-256: f4477e765f9bf29a43842e2ed73b26edc4a71675704a4badf022d19d20ebeb6a
font_01_sfnt_off00008284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8284 18052 bytes
SHA-256: fa2464eaebfb8d03ead71eceb596d04c94d28f156e1826a2469de3cf6995c318

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