Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d06e7ceb1524890…

MALICIOUS

PDF

44.7 KB Created: 2021-05-17 11:08:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3ae0c969e67b892d7de3a07267277e7a SHA-1: 52d7bae7a3718c869c9d613ce8775ab987d3c2cb SHA-256: 7d06e7ceb1524890eed4c2332908a1f8de02d8bdf53a19d977d60af10f940eed
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that form a link farm, advertising "free game hacks" and "free Robux" to entice users to click. The primary URL, https://netcdn.xyz/app/479516143/minecraft-pe-free-game-hack, is likely a lure for a malicious download. The ML classifier strongly flagged this PDF as malicious, supporting the observed link farm behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/479516143/minecraft-pe-free-game-hack
    • http://muckrossparkcollege.com/images/coinmaster-blogspot_GM406889139.pdf
    • http://muckrossparkcollege.com/images/minecraft-hack-mod_GM479516143.pdf
    • http://muckrossparkcollege.com/images/coin-master-hack-using-cheat-engine_GM406889139.pdf
    • http://muckrossparkcollege.com/images/how-to-get-free-roebucks_GM431946152.pdf
    • http://muckrossparkcollege.com/images/coin-master-free-cards-2021_GM406889139.pdf
    • http://muckrossparkcollege.com/images/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://muckrossparkcollege.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • http://muckrossparkcollege.com/images/coin-master-free-coins-and-spins-app_GM406889139.pdf
    • http://muckrossparkcollege.com/images/how-do-i-get-free-coins-on-coin-master_GM406889139.pdf
    • http://muckrossparkcollege.com/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdf
    • http://muckrossparkcollege.com/images/roblox-rape_GM431946152.pdf
    • http://muckrossparkcollege.com/images/how-to-change-roblox-username-for-free_GM431946152.pdf
    • http://muckrossparkcollege.com/images/coin-master-free-spins-2021-generator_GM406889139.pdf
    • http://muckrossparkcollege.com/images/coin-master-hack-apk-download-for-android_GM406889139.pdf
    • http://muckrossparkcollege.com/images/roblox-hack-me_GM431946152.pdf
    • http://muckrossparkcollege.com/images/coin-master-32-hack-apk_GM406889139.pdf
    • http://muckrossparkcollege.com/images/coin-master-game-hack-version-download_GM406889139.pdf
    • http://muckrossparkcollege.com/images/free-robux-without-doing-anything_GM431946152.pdf
    • http://muckrossparkcollege.com/images/coin-master-free-spins-link-without-human-verification_GM406889139.pdf
    • http://muckrossparkcollege.com/images/coin-master-link-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b20.bin
443685ef708dacea9c05b294364d1740076a87268cdc955993bf94ceb661fd7c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B20 25004 bytes
font_01_sfnt_off000083ae.bin
e843054cce6a77ded7f24eeb3966577fb3e4d28b70c33a35b71c9a71d1a084ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AE 3048 bytes
font_02_sfnt_off00008e2e.bin
f623db3d5896acbfca75c1fa71b49e9ae1d6d1c000a87567f3c2fb9ea3a364ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2E 17724 bytes

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