Malicious PDF — malware analysis report

Static analysis result for SHA-256 6625fbede2dba027…

MALICIOUS

PDF

44.8 KB Created: 2021-06-11 03:59:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2e58123c304ed155cd01ff7fc152ddb0 SHA-1: 935c7ce06e337bf01073ddb42277479b52165726 SHA-256: 6625fbede2dba027a06cf109444c033bfd4db56ef825dfe33e0824c426e7c37a
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA to trick users into interacting with it, likely to initiate a download or redirect to a malicious site. The embedded URI points to a suspicious URL associated with game hacks, suggesting a lure for potentially unwanted or malicious software. No scripts were extracted, limiting the analysis of the execution flow.

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/feral-free-robux-game-hack PDF link annotation
    • http://www.ma-plast.hr/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-cheat-codes-for-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-pokemon-go-joystick-2021_GM1094591345.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-roblox-gear-2021_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50FC 25892 bytes
SHA-256: 08da57f7e2e6164733aa7ab1d4709fc1792353d2a677a264bb124801dabf05e5
font_01_sfnt_off00008c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3E 18316 bytes
SHA-256: 48d42e0f921d1372f95828861d3f9e6bd32710af708cb9f55e498275b0cdac54

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