Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6773d631f5a621…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 10:48:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0198a82fd2b8e8165736c9ddfcaca7a3 SHA-1: c82819a5bbfe5dc64d87d249c213930212f327ab SHA-256: 4a6773d631f5a621dd698af04220b4e4cef0d5211088a01f3e3946358f74e683
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for free game spins, a common social engineering tactic. It also embeds an external URI pointing to a suspicious URL, likely intended to download a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/406889139/free-spins-on-coin-master-without-human-verification-game-hack
    • http://psb.sd-alazhar29.sch.id/repository/make-free-robux_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/free-coin-master-spins-without-human-verification_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-spin-and-coins-free_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/free-spin-coin-master-game_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/mobihack-net-roblox-hack_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-instantly_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-link-today_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/www-bandicam-com-free-robux_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-2021_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/rbxfree-com-free-robux_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-cheat-engine-hack_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/daily-free-spins-coin-master-heaven_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/roblox-phantom-forces-hack_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-hack_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-free-unblocked_GM479516143.pdf
    • http://psb.sd-alazhar29.sch.id/repository/working-coin-master-hack_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/roblox-hack-generator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050a1.bin
eed908a6d7061d64165639bc21c9dfb7265ab7bf0db8c3206eb6533103586eb5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A1 25588 bytes
font_01_sfnt_off00008b14.bin
960842b6fe33ab0647d2f84e57a2bd0982928fead2374cfcf5cb9148229d7a4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B14 18784 bytes

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