Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8356c52b2677050…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 17:14:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a39991fad0b8f29165ab718b0a7c5c6e SHA-1: ec270c93a27dbeed342020a6897d8c745498d59d SHA-256: d8356c52b2677050f92be4899c4ce3c77d6232f89f1ba42b250a793e2f53ad64
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains lures related to hacking games like Roblox and Coin Master, directing users to external URLs for downloads. The presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent to trick users into downloading potentially harmful files. Although no scripts were explicitly extracted, the document's structure and embedded links suggest it acts as a lure for further malicious activity, likely involving a downloader or exploit.

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/431946152/how-to-hack-roblox-game-hack
    • https://library.sman1berau.sch.id/repository/roblox-help-free-robux_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/how-to-hack-mcpe-master-coins_GM406889139.pdf
    • https://library.sman1berau.sch.id/repository/coin-master-hack-pc-download_GM406889139.pdf
    • https://library.sman1berau.sch.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/free-robux-please_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/coin-master-free-daily-spins-link-2021_GM406889139.pdf
    • https://library.sman1berau.sch.id/repository/hack-coin-master-spin-apk_GM406889139.pdf
    • https://library.sman1berau.sch.id/repository/rbx-land-free-robux_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/can-cheat-engine-hack-roblox_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/easy-free-robux-from-roblox_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/freerobux-co_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/simple-hacks-for-roblox_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/free-robux-no-verification-at-all_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/free-robux-generator-2021_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/best-free-roblox-executor_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/free-robux-pastebin_GM431946152.pdf
    • https://library.sman1berau.sch.id/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdf
    • https://library.sman1berau.sch.id/repository/spin-free-coin-master_GM406889139.pdf
    • https://library.sman1berau.sch.id/repository/free-spins-promo-code-for-coin-master_GM406889139.pdf
    • https://library.sman1berau.sch.id/repository/extra-free-spins-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000330c.bin
50c4f02227b155ddf10ee7c0ccf8b91e6b96e4d667939fb309c762287902875e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x330C 23116 bytes
font_01_sfnt_off0000670f.bin
bc289db47467c627b75bad478044969f7c78c51a6f1934d82e9e517bf2978efd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x670F 18820 bytes

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