Malicious PDF — malware analysis report

Static analysis result for SHA-256 418ba056bf7d250c…

MALICIOUS

PDF

33.4 KB Created: 2021-06-23 02:18:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d722fb087c08f8b7247b0b72679b733d SHA-1: 6a2b8cba30d4d7235df3ba68c890eb7fc05d2ced SHA-256: 418ba056bf7d250ca88f00ef3b69aa9b77574ebd2bbe66ade2c03b03f4af22d6
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and text fragments related to game "hacks" and "free" in-game currency, strongly suggesting a lure for users to download potentially malicious files. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures indicate an attempt to trick users into downloading malware, likely via a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/hack-roblox-real-game-hack
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-no-human-verification-2021_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spin-daily-link_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-roblox-codes-2021_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-coin-master-hacks-no-verification_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/robux-hack-no-verification_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-cheats-2021_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-hack-version-download-2021-android_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-drop-master-free_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-picture_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-coin-master-coins-2021_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spins-coins_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-and-tix-on-roblox-no-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eb5.bin
a089fca6a6ebd4c4fae5037da6a2629b8af316b2d97443004dd51a01dc8aec6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB5 21756 bytes
font_01_sfnt_off00005e6d.bin
43344ae1d35c00d3598133ca80f2cb8013bb8db2d28bef575701392c98c76360		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6D 18656 bytes

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