Malicious PDF — malware analysis report

Static analysis result for SHA-256 d329f06e33206e73…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 20:11:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3b30868e5b1a6104ebc144e40ae37f52 SHA-1: 7c21ffe0450e172cc1caef4b382576669426855d SHA-256: d329f06e33206e730892ada63599d4cfc9302db581e82179dc9b4dc14c0d1a18
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are SEO-optimized and point to gaming-related cheats or hacks. The ML classifier strongly indicated maliciousness, and the presence of numerous external URIs suggests a link farm or redirection scheme. The document body, though partially corrupted, contains a URL that likely leads to a malicious payload or phishing site.

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-free-spins-ios-app-game-hack
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-free-robux-hack_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-get-free-robux-and-tix-on-roblox-mobile_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/hack-for-roblox-jailbreak-download_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id//repository/is-tiktok-free-to-watch_GM835599320.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/snow-shoveling-hacks-roblox_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-halloween-costume-free_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id//repository/coin-master-hack-no-verification-ios_GM406889139.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-do-i-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-hack-dot-xyz_GM406889139.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-free-hair-codes_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-get-free-stuff-on-roblox-gear_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id//repository/freespincoin-masterlinkdownload_GM406889139.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/exploit-hack-roblox-free-download-mod-menu-pc_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-hack-org_GM406889139.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-hack-tool-robux-and-tickets-hack_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/funbloxxyz-free-robux_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-body-part-resize-hack_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-rich-in-roblox-accounts-with-limiteds-dump-2021-working_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/can-you-charge-robux-if-you-are-free-user_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000336f.bin
a8937fde4b4504e3112bc4fd59fa65e7c6b6c1b6bf1e759f0a8e7a349a11b8a4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x336F 23448 bytes
font_01_sfnt_off0000684f.bin
dc04036921b1963ee7132b828a33de2130f87ab3daccf07c14a967ac057e6417		 pdf-font-stream PDF embedded font (sfnt) at offset 0x684F 18176 bytes

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