Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e9ee29675cc86b…

MALICIOUS

PDF

35.6 KB Created: 2021-06-27 22:02:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 68cedbb9d1eaba15dd94dbc6ed2ec643 SHA-1: f4a5ecd5ce583723b51d8dae014c4d4b93762b15 SHA-256: 89e9ee29675cc86b8221764e9a6cf857b85604862107a0254497008a20e756f5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links and a prominent call-to-action phrase, directing users to websites offering free in-game currency and hacks. The ML classifier and the presence of a link farm strongly indicate malicious intent, likely to distribute malware or lead users to phishing sites. No scripts were extracted from this sample.

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.co/app/431946152/4-step-way-to-get-free-robux-2021-november-game-hack
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/master-coin-free-spin-daily_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/roblox-land-free-robux_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-roblox-hats-3_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/cheat-roblox-cb-r-download_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/no-verification-coin-master-hack_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/huskybuckscom-free-robux_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-promo-codes-for-roblox-2021_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-minecraft-coloring-pages_GM479516143.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-free-coins_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/games-that-can-be-hacked_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-raid-hack_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/roblox-online-game-free-no-download_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/hack-xp-net-generators-coin-master_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-daily-free-spin-and-coin_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/robux-download_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003149.bin
00d93885c1d0968e49c62af3ef0633672ec690a25c34f723715d4be857d0f26c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3149 22220 bytes
font_01_sfnt_off0000628f.bin
6ded477b575242c35ae721f455027a1f31643eeac5a09eef6c69def38f1ed553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x628F 20212 bytes

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