Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b3338a315328679…

MALICIOUS

PDF

35.6 KB Created: 2021-07-06 12:26:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e96694737a0f68b577dadf1dc1485a6d SHA-1: 552ee7b8060de5cc5a3ed1cab4d8a4ad2b3faf44 SHA-256: 0b3338a3153286790ae33e99bd6bfb5ebe6b474b5ddf33850e970bfab000f49d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs that form a link farm, with the primary URL pointing to a "Coin Master Hack Tool". This indicates a social engineering attempt to trick users into downloading potentially malicious software. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-tool-v1-9-pc-game-hack
    • http://library.stikessuakainsan.ac.id/repository/free-legit-way-to-get-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spins-link-2021-march_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/cmaster-club-coin-master-hack-tool_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id//repository/free-robux-without-verify_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/is-coin-master-hacks-safe_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id//repository/how-to-get-free-roblox-hair_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/free-coin-master-androd-cheats-2021_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-tix-dominus-roblox_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/coin-master-free-spins-generator_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/how-to-talk-to-roblox-if-you-get-hacked_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-roblox-codes-2021_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/coin-master-hack-co_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-uber-roblox-id_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/play-roblox-and-download-for-free_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/coin-master-free-chip_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/how-to-speed-hack-roblox-cheat-engine_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/knife-server-roblox-hack_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/tiktok-free-to-watch_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033a9.bin
13f597aef99a21a5c6e676f63c6fd8354f177ac4b06fbb89e81636dc85e71f65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33A9 22992 bytes
font_01_sfnt_off00006751.bin
05e372db28382383b8fb1d6d85d0770e1cf8f4ab3bf844e67e8d39ea3396f519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6751 18636 bytes

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