Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d55ce4c2f8c4a2…

MALICIOUS

PDF

44.3 KB Created: 2021-06-07 09:44:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: af82fa665942a0349ff5690814507612 SHA-1: 4053169f36a1f949ee0dd3ca3e187b7f045d8056 SHA-256: 97d55ce4c2f8c4a23bac9bb4670b0eb13eae6465969c5d5cfcfc7e0fe5f797c1
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA or human verification prompt, a common lure for users seeking free in-game items or hacks. It contains numerous embedded URLs pointing to sites offering similar content, suggesting a phishing or scam attempt. The primary URL, https://netcdn.tw/app/431946152/robux-generator-no-pasword-no-hack-game-hack, is likely the intended destination for the user's interaction.

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/robux-generator-no-pasword-no-hack-game-hack PDF link annotation
    • http://centr-expert.su/images/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/tiktok-free-recharge-500_GM835599320.pdfIn PDF document text
    • http://centr-expert.su/images/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-free-coins-and-spins-app_GM406889139.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_off00004f03.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F03 25064 bytes
SHA-256: b18fe8c8c7d4cbf05da4221dad889036bd50289261600021f3050e672417bb0c
font_01_sfnt_off000088ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AD 18844 bytes
SHA-256: 43079c12946064aa9d60c73b1f34dfaa9ec80918ce7d6bd08ffbfc4194450d62

Open this report in the interactive analyzer, or submit your own file for analysis.