Malicious PDF — malware analysis report

Static analysis result for SHA-256 211f87b1715af56e…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 22:29:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f14d573a07cd9f19102ab0cfe61bf404 SHA-1: 10ff6d1ce3b5d575be549e6f5e123a9c251c0abe SHA-256: 211f87b1715af56eb71ce3c8825381f99fa652bdb0781048cd53b52c74f15b5e
102 Risk Score

Malware Insights

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

The document contains a lure related to game hacks and includes multiple embedded URLs pointing to potentially malicious content. The heuristic 'SE_SECRET_RECOVERY_LURE' suggests the document may also attempt to phish for sensitive information like private keys or passwords under the guise of game-related assistance. The ML classifier also flagged this PDF as malicious.

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/how-to-get-free-coins-for-coin-master-game-hack PDF link annotation
    • http://lib.kunci.or.id/repository/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C0 26916 bytes
SHA-256: 6f88a8ba8035d6b8a64d4c2b0c8f5221af96e0e9d2ade7697398268f0d7d0b31
font_01_sfnt_off00008f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F2D 17872 bytes
SHA-256: 8c0da9336e983259e7b63ac0942506965b31c2e675ac4d9d442a950891c70db8

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