Malicious PDF — malware analysis report

Static analysis result for SHA-256 e24b1e2e5fed10ba…

MALICIOUS

PDF

33.5 KB Created: 2021-06-18 15:39:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3f6859b3638fc21731e3cf41b112bdd3 SHA-1: d50a6832a7cca2d912d308d044d18b85659c1fee SHA-256: e24b1e2e5fed10bae7ccc364b3e176eb8d031bde3c8ab3e7bcd2f53599f78e98
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick users into downloading a payload. The embedded URLs and document body content strongly suggest a lure related to game cheats and in-game currency, such as Robux. The primary malicious URL identified is http://netcdn.co/app/431946152/robux-safe-free-game-hack, which likely hosts the secondary stage.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/robux-safe-free-game-hack PDF link annotation
    • https://inspiration-modellbau.de/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/free-robux-no-scam-no-hack_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/roblox-prison-life-v2-02-hack_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/kristjon-15k-robux-reward-hack-tutorial_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/how-can-i-get-every-item-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/roblox-hack-v6-5_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/earn-robux_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/free-robux-no-survey-at-all_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/roblox-cheat_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/how-to-download-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/regular-free-robux_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/roblox-granny-cheats_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/how-to-get-free-items-on-roblox-without-robux_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
font_00_sfnt_off00002de6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE6 22156 bytes
SHA-256: a61149289d7e043787368dbd49597345b05027df7567ac523aa8c57eb4ba6435
font_01_sfnt_off00005f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2D 18528 bytes
SHA-256: b1e01e380a2aef2ba44c5908e7974007c165147503157b4449e0d26495098f48

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