Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a2549d42182faab…

MALICIOUS

PDF

42.4 KB Created: 2021-05-14 06:32:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 77732190167e5a0739c51f9a567d4822 SHA-1: 09cc47660a9640eb1ca6399b6d8a5f4290e4664c SHA-256: 5a2549d42182faabe3c1c4546834f6b50199707195e3ebef85af6a35c6179431
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA lure to deceive users into clicking a link that likely leads to the download of malicious content, such as game cheats or hacks. The embedded URLs point to domains hosting such content, indicating a social engineering tactic to facilitate further compromise. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/coin-master-hack-review-game-hack
    • https://mtsn4kukar.com/__statics/gudangsoal/files/real-robux-generator-2021_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-executors-for-roblox_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-coins-coin-master_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-computer_GM479516143.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-hack-version-2021-download_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/redeem-roblox-card-free_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-daily-gifts_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-roblox-clothes-and-hair_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-coin-master-spins-for-today_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/robux-games_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/roblox-script-hack_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/roblox-promo-codes-2021-robux_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-cheat-codes-for-coin-master_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-spin-link-hack_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/apps-for-free-robux_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/get-free-cards-for-coin-master_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/app-master_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/roblox-promo-code-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a7f.bin
cc60963138eceef06115f55d8eff04673baa379407390a0a7a748d3caa429525		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A7F 25708 bytes
font_01_sfnt_off00008417.bin
bfe601b020b171f100e70e38fab7406fb887819b27a361e00f5b71bc8f64446b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8417 17996 bytes

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