Malicious PDF — malware analysis report

Static analysis result for SHA-256 47da8273479e8a3d…

MALICIOUS

PDF

42.9 KB Created: 2021-05-12 08:39:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a8d7d2673f38042a0ddc62035afdb823 SHA-1: 9c7e522137fe864faecedfb10e57ff1767cede7e SHA-256: 47da8273479e8a3d6b1f1779fbbb180260f0717952df7f559d9962c30476cd3e
62 Risk Score

Malware Insights

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

The document contains a lure for "infinite Robux" and game hacks, directing users to a URL that likely serves a malicious payload. The presence of a callback lure suggests a potential phishing or scam attempt, possibly to trick users into revealing personal information or making payments. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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 https://netcdn.xyz/app/431946152/infinite-robux-game-hack
    • https://opac.pasca.isi.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdf
    • https://opac.pasca.isi.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • https://opac.pasca.isi.ac.id/repository/coin-master-free-spins-no-survey_GM406889139.pdf
    • https://opac.pasca.isi.ac.id/repository/android-coin-master-hack_GM406889139.pdf
    • https://opac.pasca.isi.ac.id/repository/roblox-free-roblox_GM431946152.pdf
    • https://opac.pasca.isi.ac.id/repository/free-robux-games_GM431946152.pdf
    • https://opac.pasca.isi.ac.id/repository/coin-master-32-hack-apk-download_GM406889139.pdf
    • https://opac.pasca.isi.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdf
    • https://opac.pasca.isi.ac.id/repository/minecraft-multiplayer-free_GM479516143.pdf
    • https://opac.pasca.isi.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdf
    • https://opac.pasca.isi.ac.id/repository/coin-master-hack-apk_GM406889139.pdf
    • https://opac.pasca.isi.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdf
    • https://opac.pasca.isi.ac.id/repository/hack-coin-master-dzooka_GM406889139.pdf
    • https://opac.pasca.isi.ac.id/repository/free-robux-redeem-codes-2021_GM431946152.pdf
    • https://opac.pasca.isi.ac.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdf
    • https://opac.pasca.isi.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdf
    • https://opac.pasca.isi.ac.id/repository/free-robux_GM431946152.pdf
    • https://opac.pasca.isi.ac.id/repository/robux-earner_GM431946152.pdf
    • https://opac.pasca.isi.ac.id/repository/roblox-e-free_GM431946152.pdf
    • https://opac.pasca.isi.ac.id/repository/roblox-free-robux-generator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a66.bin
ee69b82868bba85abdd29f75ad01bf64d1806ce6cb5307454f24ffa61aabc05f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A66 25792 bytes
font_01_sfnt_off000085c8.bin
c10dc34708056d46d1c5f2f844ba93123ab91eb2f7cf1dd8665e6f652890d1b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85C8 18076 bytes

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