Malicious PDF — malware analysis report

Static analysis result for SHA-256 902948cc8fd8b55d…

MALICIOUS

PDF

43.9 KB Created: 2021-05-13 23:01:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e04c6856314ccf69e5f7c520e9da47d4 SHA-1: bb73d8e50c12ef4ff0ff370ae717eb559f0276ad SHA-256: 902948cc8fd8b55df48936a23b7f26c1804e0e76e64b900e2a04ccace5bca8d2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are SEO-optimized PDF documents promising free in-game currency or hacks. The primary URL, 'https://netcdn.xyz/app/406889139/coin-master-heaven-free-daily-spins-game-hack', suggests a scam or phishing attempt. The presence of embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-heaven-free-daily-spins-game-hack
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-mods-for-coin-master_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/roblox-microsoft-rewards_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/minecraft-app-free-download_GM479516143.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-coin-master-spin-app_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-hack_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/roblox-bux-free_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-31_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-coin-spin-coin-master_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-free-pin_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-script_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/moonactive-free-spins-2021_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-connection-lost-hack_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e13.bin
6e11d58289bcf5963b767207c43a95ed2f04dbf89c282ca9bb8b0ce7849f9c31		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E13 25684 bytes
font_01_sfnt_off000088fc.bin
3ecb90ef472e5e2f59c65ed4968a9b56eea25dc0e2c6a87bd992ad99bf12be05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88FC 18420 bytes

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