Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd40096e2dfbafe…

MALICIOUS

PDF

41.8 KB Created: 2021-05-16 02:30:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5c3d0fec24e352ece358957aca4a4b45 SHA-1: e8e40e69c5bd531d0f6701fac00038958ff77d0d SHA-256: 7dd40096e2dfbafea805e499e6c74bd01ca14dfc5cbe5fdb87b803a78d625ae9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized PDF gateways. The primary URL, https://netcdn.xyz/app/406889139/free-coin-master-spins-link-game-hack, suggests a lure for game-related cheats or hacks. The ML classifier strongly indicated maliciousness, and the presence of a link farm points towards a campaign distributing potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-coin-master-spins-link-game-hack
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • http://library.forda-mof.org/katalog/repository/huskybuckscom-free-robux_GM431946152.pdf
    • http://library.forda-mof.org/katalog/repository/free-robux-link_GM431946152.pdf
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • http://library.forda-mof.org/katalog/repository/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://library.forda-mof.org/katalog/repository/minecraft-pocket-edition-free-apk_GM479516143.pdf
    • http://library.forda-mof.org/katalog/repository/coin-master-game-hack-online_GM406889139.pdf
    • http://library.forda-mof.org/katalog/repository/hack-coin-master-using-pc_GM406889139.pdf
    • http://library.forda-mof.org/katalog/repository/daily-coin-master-link_GM406889139.pdf
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-october-17-2021_GM406889139.pdf
    • http://library.forda-mof.org/katalog/repository/minecraft-diamond-finder-hack_GM479516143.pdf
    • http://library.forda-mof.org/katalog/repository/roblox-generator-no-human-verification_GM431946152.pdf
    • http://library.forda-mof.org/katalog/repository/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdf
    • http://library.forda-mof.org/katalog/repository/coin-master-free-100-spin-link_GM406889139.pdf
    • http://library.forda-mof.org/katalog/repository/robux-generator-2021_GM431946152.pdf
    • http://library.forda-mof.org/katalog/repository/coin-master-hacks-no-surveys_GM406889139.pdf
    • http://library.forda-mof.org/katalog/repository/roblox-hack-me_GM431946152.pdf
    • http://library.forda-mof.org/katalog/repository/coin-master-heaven-free-spins_GM406889139.pdf
    • http://library.forda-mof.org/katalog/repository/robux-fun-hack_GM431946152.pdf
    • http://library.forda-mof.org/katalog/repository/earn-free-robux-today_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004995.bin
fcd8ede9cd5884a2e1f996216c177c0c9f2ff4e00daa15943fe1b17dcfadbc85		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4995 24540 bytes
font_01_sfnt_off000081cd.bin
3a13f115a00b8b7b194300b8b076c3bf70984f89fe406390bc378e2507b22e35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81CD 18056 bytes

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