Malicious PDF — malware analysis report

Static analysis result for SHA-256 f18e10766f221cc9…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 03:53:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d33d702b8064f78ff19e162d12aff973 SHA-1: 533a418bef2bd82a1ef015e54c42553dee0c999c SHA-256: f18e10766f221cc9a343309ec3d7b0a96c5beb843857a7bda2ea698373abf6f7
62 Risk Score

Malware Insights

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

The document contains multiple embedded URLs advertising hacks and free currency for games like Coin Master and Roblox, indicating a lure for users to download potentially unwanted or malicious applications. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or scam attempt.

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.tw/app/406889139/coin-master-hack-spins-app-game-hack
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-account-roblox-with-robux_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/no-scam-free-robux_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-roblox-girl-hair-not-a-model_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-free-faces-girl_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-hacks-2021_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-robux-without-paying_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/hack-minecraft_GM479516143.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/robux-hacks-2021_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/websites-to-get-free-robux_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-modded-minecraft-server_GM479516143.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/el-mejor-hack-para-roblox-indetectable_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/wwe-backpack-roblox-free_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/robux-gift-card-free_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-accounts-with-space-names-roblox_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-tiktok-coins_GM835599320.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-hack-a-computer-in-roblox-flee-the-facility_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003273.bin
faa3291636122d7afb059b303d0de94c0e4b458427fa466d1d828c50bdbc4286		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3273 23304 bytes
font_01_sfnt_off000066db.bin
1e953b72540ec4677b5f3a09436cf02581c7252e246dbe5ac414cafa51ba2d5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66DB 18180 bytes

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