Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2027941d819253a…

MALICIOUS

PDF

36.9 KB Created: 2021-07-06 19:57:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ea2085b356891822c72b0fefc21f8ea3 SHA-1: d55dcd728c1d467c10a43166a0cac8a8eb1faf11 SHA-256: d2027941d819253a77fbe3f4376f50ec1a7869dc554339e97c455e7bc8b3809c
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, with the primary one being http://netcdn.tw/app/406889139/coin-master-free-online-game-hack. The document body and heuristics indicate a lure for free in-game items, suggesting a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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-free-online-game-hack
    • http://perpustakaan.sman2bondowoso.sch.id/repository/coin-master-gold-cards-hack_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/free-robux-com-no-verification_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/boku-no-roblox-quirk-hack_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/google-can-you-give-me-free-robux_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/how-to-get-free-robux-for-kids_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/how-to-get-50-robux-free-2021_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/free-robux-code-thai_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/rbxoffers-earn-free-robux_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/try-minecraft-free_GM479516143.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/roblox-lawsuit_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/coin-master-links-free-spins_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/free-minecraft-skin-creator_GM479516143.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/how-to-make-free-robux_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/coin-master-rewards-2021_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/free-robux-reddit_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/can-i-get-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031da.bin
0c4d924b18fd20091abebc5bcbbe905528276c4d3a8a00706c6ca28680fde79d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31DA 22616 bytes
font_01_sfnt_off00006442.bin
c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6442 2896 bytes
font_02_sfnt_off00006e27.bin
9a6ea7e5c4fcb1d29d923506a668b6cdad7d08d2b44aebba516827669de007ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E27 18072 bytes

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