Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d9514046d482500…

MALICIOUS

PDF

52.5 KB Created: 2021-05-16 15:15:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2e16c1188acef03e3ac90cbe064bbf7f SHA-1: 6bf0ea1daa1936357cc7164d91013f5b75a18432 SHA-256: 4d9514046d4825007fd948068a98277a3439b2d4bbce78d6d5a18fa565bec136
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free generators' to entice users into clicking malicious links. The document contains numerous URLs pointing to domains that host similar lures, suggesting a campaign to redirect users to potentially malicious websites or download further malware. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may also attempt to trick users into executing commands, further increasing the risk.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8646

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/479516143/hacker-minecraft-song-game-hack PDF link annotation
    • http://ratchadatitan.com/UserFiles/File/generator-robux_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/robux-place-rewards_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cbb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CBB 24384 bytes
SHA-256: dc551c2b3400942746c59140000b092153d3f57e425464fd4f6807819d06e150
font_01_sfnt_off00008387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8387 7936 bytes
SHA-256: 218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e
font_02_sfnt_off00009cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB0 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000ab3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB3C 18168 bytes
SHA-256: 37e3c409e679a213a10e0592b8ff177cf348fa9834d19b03b17241e7ed0c948b

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