Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2dd5b826038e6d9…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 00:36:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 77bba0d39df9a783285ef69c2cc21718 SHA-1: 7fe751be87b449780b628549ba6f775b9eefa0c8 SHA-256: b2dd5b826038e6d93083d41442d75b617552ce4a9599a05944d29eb44e432374
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, including one that directly advertises 'how-to-get-free-robux-instantly-game-hack'. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a download button lure suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the overall pattern indicates a likely attempt to trick users into downloading further malicious content or visiting compromised sites.

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-get-free-robux-instantly-game-hack
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-land-free-robux_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/robux-hack-download-no-human-verification_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-golden-card-hack_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-game-card-pins-july-3d-2021_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-become-a-speed-hacker-in-roblox_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-link_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-cards-2021_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-with-fake-credit-card_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-1-pastebin-com_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-hold-space-jump-script-hack_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/hacking-2-step-verification-for-roblox_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/is-it-impossible-to-get-free-robux_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-wurst-hacked-client_GM479516143.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spin-and-coin-links_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-roblox-accounts-on-a-phone_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/spin-free-coin-master_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/is-minecraft-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000309f.bin
f0ce49863178e7eaf07deb12ffff7009145e648ce13e27311778f57d0a57bb9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x309F 22512 bytes
font_01_sfnt_off000061ce.bin
46dd4588562bbb2dce6134725fa943138dd103635f5b260b652d173228825468		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CE 19240 bytes

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