Malicious PDF — malware analysis report

Static analysis result for SHA-256 367fa56d29b63a28…

MALICIOUS

PDF

42.7 KB Created: 2021-05-11 02:35:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 583bc896479db62c85e9ef2eef97b19b SHA-1: af77febada896430a4f26dc55973ca222a155124 SHA-256: 367fa56d29b63a28f05d994a7854cb9c437a3cd590dab1a80ff754be0ac9c02e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which are related to game hacks and free items, suggesting a lure to download malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports this assessment. While no scripts were directly extracted, the PDF structure and embedded links indicate a malicious workflow designed to trick users into downloading unwanted or harmful files.

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/spin-coin-master-hack-game-hack
    • https://pustaka.widyakartika.ac.id/repository/best-free-minecraft-skins_GM479516143.pdf
    • https://pustaka.widyakartika.ac.id/repository/will-minecraft-dungeons-be-free_GM479516143.pdf
    • https://pustaka.widyakartika.ac.id/repository/roblox-land-free-robux_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdf
    • https://pustaka.widyakartika.ac.id/repository/mcpe-master-coin-hack-apk_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/minecraft-pocket-edition-apk-free-download_GM479516143.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-online-minecraft-server_GM479516143.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-spins-coin-master-app_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-cheats_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-robux-no-human-verify_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/hack-coin-master-apk-31_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/microsoft-roblox_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-spins-coin-master-links-blogger_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/roblox-free-download_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/coin-master-new-link-free-spin_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-robux-sites-2021_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-minecraft-hosting-24-7_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bc8.bin
f8e1b0ba4e03ec0955ace26ca2ece682adf65c0f05cba19f103ee96320dac8e1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC8 25104 bytes
font_01_sfnt_off000085a2.bin
a3a1b04a82279d9b81c305d9015fdfbc4eb608af79be49bd49bec6a16d15ba5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85A2 17892 bytes

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