Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e78b806e007747f…

MALICIOUS

PDF

35.4 KB Created: 2021-07-21 04:41:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9b199c32057337421d215031758e5112 SHA-1: 3abdefba0f7fea10273c9c8e053818b5d22a946a SHA-256: 0e78b806e007747f9a617ebbbdd612cc412fe12c2dfde9432250dee0aee7403b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent call-to-action to download an application related to game cheats. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of obfuscated content and numerous suspicious URLs suggests an attempt to deliver a second-stage payload.

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 http://netcdn.tw/app/406889139/free-spins-coin-master-unlimited-game-hack
    • https://magistrinfo.ru/images/get-free-robux-no-human-verification_GM431946152.pdf
    • https://magistrinfo.ru/images/minecraft-free-app_GM479516143.pdf
    • https://magistrinfo.ru/images/free-minecraft-capes_GM479516143.pdf
    • https://magistrinfo.ru/images/100-free-spins-coin-master_GM406889139.pdf
    • https://magistrinfo.ru/images/free-views-on-tiktok_GM835599320.pdf
    • https://magistrinfo.ru/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://magistrinfo.ru/images/free-robux-scam_GM431946152.pdf
    • https://magistrinfo.ru/images/minecraft-free-android_GM479516143.pdf
    • https://magistrinfo.ru/images/how-to-hack-minecraft_GM479516143.pdf
    • https://magistrinfo.ru/images/roblox-robux-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032c5.bin
dbb03f6b78bbc1b578f333db93bfc6c2f985a550ece8ec4a1d40b35cbbd02c48		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32C5 23504 bytes
font_01_sfnt_off000067e9.bin
8aad0f2405ec9a3272b05944b48a23572f7af0293916013bea6eee8874d320e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E9 18580 bytes

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