Malicious PDF — malware analysis report

Static analysis result for SHA-256 25329e4f21a8b123…

MALICIOUS

PDF

49.0 KB Created: 2021-06-11 01:44:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 35fc03d9cf629ead27105bfcf58379f4 SHA-1: a66ae56d1752f3be07ae831ddd1a519a5564cdf5 SHA-256: 25329e4f21a8b1236d98abe2137192e2252f83d9cb0e5c43bd2c9c8f2d6113c9
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that explicitly advertises 'Robux Hack No Download No Survey 2021'. This strongly suggests a lure to download a malicious payload, likely related to game cheating or account compromise. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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.tw/app/431946152/robux-hack-no-download-no-survey-2021-game-hack
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-no-offers_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/lazyblox-com-free-robux_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-spins-hack-2021_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-hack-free-robux-hack-2021_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/strucid-aimbot_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/blox-supply-free-robux_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/hack-version-of-coin-master-apk-download_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-hack-app-ios_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/microsoft-roblox-rewards_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-jump-high-on-roblox-hack-2021_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-spins-coin-master-links-2021_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/daily-free-spins_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000057ef.bin
f0b0b99a2f417102905dc7416b95fbe4f120eb57a0bc9c779605876b78866d4d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x57EF 28728 bytes
font_01_sfnt_off00009909.bin
406860d65b3d3b86b69d15dede824d62d14da4099e50bd2eea732852e8e9ffe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9909 19524 bytes

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