Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdb8b5dcc81ae1c1…

MALICIOUS

PDF

34.5 KB Created: 2021-06-25 08:47:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: eea95bbaa1d24467697b071f3b4ae2d8 SHA-1: ad7bbd4333b460de1cfb2e73aa97e82ebf0734e4 SHA-256: fdb8b5dcc81ae1c1eca50b7a69d06e38609d52a3b95f3743dcd84e17b6705996
82 Risk Score

Malware Insights

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

The document contains numerous embedded URLs and a document body that explicitly mentions 'Roblox How To Hack Someone' and links to various game-related hacks. The presence of external URIs and the ML classifier's high confidence score indicate malicious intent. The document likely serves as a lure to download a second-stage payload, potentially a game cheat or malware, from one of the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.co/app/431946152/roblox-how-to-hack-someone-game-hack PDF link annotation
    • http://pustaka.faterna.unand.ac.id/repository/coin-monster_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/tiktok-free-robux_GM835599320.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-after-the-flash-hack-item-unlocker_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-roblox-passwords-with-cmd_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-a-dominus-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-windows-10-free_GM479516143.pdfIn macro / runtime command snippet
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-robux-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-use-cheat-engine-66-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-scpf-site-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/ash-greninja-free-shopping-in-roblox-on-roblox-shopping-shir_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hack-song-id-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/apps-that-will-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-roblox-card-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/reposIn macro / runtime command snippet
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E1 22068 bytes
SHA-256: c9737e24feb1be13a9d5d1707db88cf294f293ca95a2990d462ee46d00ae3ee2
font_01_sfnt_off000061d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D6 19080 bytes
SHA-256: c96f9aca97f607b3816cd7ddd1dab46b508399fbd1384cb44e6b795d03fda662

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