Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f7287bd172a112…

MALICIOUS

PDF

42.6 KB Created: 2021-05-15 15:02:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fc3f58ea52f738078ad3a843c3cf8c5a SHA-1: 54eae26156755198620d53fc86caf05ffa55dcc1 SHA-256: 58f7287bd172a11235eb063a03e4be3eb1e7d44db0a9b786ea014d140bda8922
82 Risk Score

Malware Insights

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

The PDF document displays a fake CAPTCHA or human verification prompt, a common lure to trick users into clicking malicious links. The embedded URL, https://netcdn.xyz/app/431946152/show-me-how-to-get-free-robux-game-hack, likely leads to a second-stage payload download. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/show-me-how-to-get-free-robux-game-hack PDF link annotation
    • http://wireprod.net/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://wireprod.net/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://wireprod.net/images/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://wireprod.net/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://wireprod.net/images/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://wireprod.net/images/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://wireprod.net/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://wireprod.net/images/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://wireprod.net/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://wireprod.net/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://wireprod.net/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://wireprod.net/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://wireprod.net/images/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://wireprod.net/images/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://wireprod.net/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://wireprod.net/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://wireprod.net/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://wireprod.net/images/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://wireprod.net/images/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://wireprod.net/images/rare-free-links-to-coin-master_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_003_off000048ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48EC 25904 bytes
SHA-256: 012480cd1bd5f44f6ea4f37fd514b9cc2f1448f0f37557d4acd9ce716e34bb80
font_01_sfnt_off00008337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8337 18644 bytes
SHA-256: e51f5be8af2709164d8b68ea121f2f3a624582c0bbe9bba0986852bbf2bf647d

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