Malicious PDF — malware analysis report

Static analysis result for SHA-256 5512ba1b93f52019…

MALICIOUS

PDF

41.2 KB Created: 2021-05-19 08:50:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3f715960cef89b81083d67c820b36b1b SHA-1: d360448f52b9733383ea6f246a6e162c37472bea SHA-256: 5512ba1b93f5201949de6da23af56f03c581f50d705b71b24aff6c356e9a4174
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a call-to-action lure, strongly suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence. The document body and extracted URLs point towards lures for in-game currency and hacks, which are common pretexts for distributing malware or conducting credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/how-to-get-more-spins-on-coin-master-for-free-game-hack
    • https://farkas.de/images/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • https://farkas.de/images/roblox-hack-client_GM431946152.pdf
    • https://farkas.de/images/free-coin-master-spins-daily_GM406889139.pdf
    • https://farkas.de/images/free-robux-obby-2021_GM431946152.pdf
    • https://farkas.de/images/coin-master-free-link-daily_GM406889139.pdf
    • https://farkas.de/images/claim-free-robux_GM431946152.pdf
    • https://farkas.de/images/coin-master-daily-free-spin-app_GM406889139.pdf
    • https://farkas.de/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://farkas.de/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdf
    • https://farkas.de/images/free-robux-no-human-verification-2021_GM431946152.pdf
    • https://farkas.de/images/claimrbx-free-robux_GM431946152.pdf
    • https://farkas.de/images/coin-master-free-spins-link-31-march-2021_GM406889139.pdf
    • https://farkas.de/images/robux-hacks-2021_GM431946152.pdf
    • https://farkas.de/images/earn-free-robux-for-roblox_GM431946152.pdf
    • https://farkas.de/images/coin-master-free-spins-hack_GM406889139.pdf
    • https://farkas.de/images/roblox-robux_GM431946152.pdf
    • https://farkas.de/images/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdf
    • https://farkas.de/images/coin-master-hack-tool-download_GM406889139.pdf
    • https://farkas.de/images/roblox-adopt-me-hack_GM431946152.pdf
    • https://farkas.de/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004861.bin
ca0647b25e61fc8af0c8602546c0c8ff31eff30af7c24a42ba5258285111135a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4861 24556 bytes
font_01_sfnt_off00007f71.bin
fa2464eaebfb8d03ead71eceb596d04c94d28f156e1826a2469de3cf6995c318		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F71 18052 bytes

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