Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba012389b2bad1ee…

MALICIOUS

PDF

44.1 KB Created: 2021-06-08 17:00:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dc6cb7ed1b6f132d3a3622556ce99226 SHA-1: 086b6c9b77f25b323769bf7a9f2bdfe449119c28 SHA-256: ba012389b2bad1ee9cf762506bd6130408e1a1764a03eff5529181a9d516a9d6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF document that displays a fake CAPTCHA or human verification prompt to lure the user into clicking a link. The embedded URL, https://netcdn.tw/app/431946152/roblox-anti-speed-hack-game-hack, likely leads to a malicious site designed to deliver a payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-anti-speed-hack-game-hack PDF link annotation
    • https://www.ma-plast.hr/files/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/tiktok-followers-generator-free_GM835599320.pdfIn PDF document text
    • http://www.ma-plast.hr/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e09.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E09 25920 bytes
SHA-256: e0c5e28192a2098f00134d796abd40f33fa089e497f62d77191ff3d832510fb7
font_01_sfnt_off00008835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8835 18756 bytes
SHA-256: 457faf333b12b2c92467d5d926de555908a3c4f6d8722e8d68e661bba6412abf

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