Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad2dc6aa415f1aa…

MALICIOUS

PDF

41.1 KB Created: 2021-05-19 02:23:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1c11fb8d5f7719d6bf8e41ee959ded37 SHA-1: 65d3e965c0dad66def065eb9a51437c13fca152b SHA-256: 0ad2dc6aa415f1aae23d4cc33d07f6ac22287a7b719c16094db10dd5e5893e5e
82 Risk Score

Malware Insights

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

The PDF document contains a lure for "free spins" on Coin Master, impersonating Facebook and directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of a call-to-action button further supports a phishing or scam attempt. The embedded URI points to a suspicious domain, likely serving as a landing page for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/40-free-spins-coin-master-game-hack.
  • 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/406889139/40-free-spins-coin-master-game-hack PDF link annotation
    • https://www.fubode.org/images/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/robux-gainer_GM431946152.pdfIn PDF document text
    • https://www.fubode.org/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://www.fubode.org/images/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • https://www.fubode.org/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.fubode.org/images/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.fubode.org/images/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.fubode.org/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.fubode.org/images/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.fubode.org/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.fubode.org/images/coin-master-hack-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_003_off000046b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46B5 24308 bytes
SHA-256: 1fbdf07ac9c6d8cf03c8f0e3feb4857cf3cc851aed2ec3e71ec73baf6c8aee4f
font_01_sfnt_off00007e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E73 18120 bytes
SHA-256: adc3b494d1fa0974f6acdf3c8a88f4cec1eca3c3c07b4c24b7a089c53791e33f

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