Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae15b68fdf9802b7…

MALICIOUS

PDF

49.3 KB Created: 2021-06-03 06:23:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4ee3b73faae7e7d798541bb26d2c6b43 SHA-1: 4be6a3173d72022fd627c318bd06cc3b25ab3d5e SHA-256: ae15b68fdf9802b7f62adf5ab25a525b080db14a10291cb523cd2a72d57dc0b1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The document presents a fake CAPTCHA or human verification prompt, a common lure to trick users into downloading further malicious content. It contains multiple embedded URLs, one of which, https://netcdn.online/app/431946152/roblox-no-clip-hacks-every-game-game-hack, is directly associated with the fake CAPTCHA heuristic. The presence of these lures and external links suggests an attempt to facilitate the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/roblox-no-clip-hacks-every-game-game-hack
    • http://digilib-ppsunisma.ac.id/repository/minecraft-free_GM479516143.pdf
    • http://digilib-ppsunisma.ac.id/repository/coin-master-collect-today-free-spin_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/daily-coin-master-free-spin-link-facebook_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-spins-link-fb_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/coinmaster-fan-page_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/promo-codes-to-get-free-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/robux-generator-without-verification_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/master-coin-free-spin_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/coin-master-mod_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-download-android_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/where-to-get-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/roblox-hack-me-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-fire_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-spins-coin-master-links_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hacks-for-android_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/minecraft-free-download_GM479516143.pdf
    • http://digilib-ppsunisma.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-robux-redeem-codes-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005191.bin
73e6585bf46b6a2f99093f45bcd85553afab81a00eaad85495306878cbc47208		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5191 26240 bytes
font_01_sfnt_off00008f1b.bin
9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1B 5596 bytes
font_02_sfnt_off00009bc3.bin
9016a6f37941132c5f71ff7ab014d43de562085cb988ef9634ea22adf4295a0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC3 19032 bytes

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