Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ea1461c72fa589a…

MALICIOUS

PDF

47.5 KB Created: 2021-06-04 00:09:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2a007c9e6154eee772c182c51044235b SHA-1: 1a8802eaeefd1363784e8ecff4a3e6ff1a82ca4f SHA-256: 1ea1461c72fa589a04948818e686da51fbb8762a6d91344063a88219b70d66bb
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that attempts to lure the user into downloading a "Roblox Hack 2021" tool. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple external URIs suggests a download or redirection attempt. While no scripts were explicitly extracted, the overall pattern indicates a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/431946152/roblox-hack-2021-game-hack
    • http://lib.icbc-indonesia.org/repository/free-coin-master-cards-link_GM406889139.pdf
    • http://lib.icbc-indonesia.org/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://lib.icbc-indonesia.org//repository/how-to-get-free-robux-promo-codes_GM431946152.pdf
    • http://lib.icbc-indonesia.org//repository/free-robux-generator-no-survey_GM431946152.pdf
    • http://lib.icbc-indonesia.org/repository/uprobuxcom-free-robux_GM431946152.pdf
    • http://lib.icbc-indonesia.org//repository/free-robux-no-verification-or-survey-2021_GM431946152.pdf
    • http://lib.icbc-indonesia.org//repository/how-to-hack-robux_GM431946152.pdf
    • http://lib.icbc-indonesia.org/repository/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdf
    • http://lib.icbc-indonesia.org//repository/coin-master-free-coins-hack_GM406889139.pdf
    • http://lib.icbc-indonesia.org/repository/free-robux-without-any-verification_GM431946152.pdf
    • http://lib.icbc-indonesia.org/repository/robux-place-rewards_GM431946152.pdf
    • http://lib.icbc-indonesia.org//repository/free-robux-rewards_GM431946152.pdf
    • http://lib.icbc-indonesia.org/repository/easy-robux-generator_GM431946152.pdf
    • http://lib.icbc-indonesia.org//repository/coin-master-free-coin-hack_GM406889139.pdf
    • http://lib.icbc-indonesia.org//repository/roblox-hacks-for-mac_GM431946152.pdf
    • http://lib.icbc-indonesia.org//repository/roblox-robux-hack-generator_GM431946152.pdf
    • http://lib.icbc-indonesia.org/repository/best-free-spin-app-for-coin-master_GM406889139.pdf
    • http://lib.icbc-indonesia.org//repository/rblx-gg-free-robux_GM431946152.pdf
    • http://lib.icbc-indonesia.org/repository/how-to-get-free-cards-for-coin-master_GM406889139.pdf
    • http://lib.icbc-indonesia.org/repository/how-to-get-free-minecraft-windows-10_GM479516143.pdf
    • https://collectrobux.co
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050ce.bin
32b8189dd28b80f32b8a243003efb7fbb72bc5c3acf3c04c276082a66611f391		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50CE 25440 bytes
font_01_sfnt_off00008bc1.bin
ae8acc7f13e86db3aed98d7dfb73e70e16f4dedb45e9f0467460b76f54e1a1bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC1 2940 bytes
font_02_sfnt_off000095cf.bin
2941163c9806e22b58ea5552aa71059231a9f2c3bbffbca0ecd460ca17501cff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95CF 18584 bytes

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