Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dcec663c2008dd1…

MALICIOUS

PDF

32.7 KB Created: 2021-06-29 04:30:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8e44de1fcad5a516b78c88d4cec481be SHA-1: 0b0be34bec8b731d6d92532a30964a9a336aac69 SHA-256: 3dcec663c2008dd1a65dde27d7cabaee616aa05255b359a8604b29e534b9c6f9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous URLs and text referencing game hacks and cheats, aiming to trick users into downloading malicious content. The presence of 'cmds_GM431946152.pdf' and the ML classifier's high confidence score indicate a malicious intent to deliver a payload. No scripts were extracted, but the embedded URLs suggest a download and execution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-thunami-hack-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/robux-win_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-accounts-obc-lifetime_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-roblox-tix-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-cmds_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-roblox-accounts-2021-on-pc_GM431946152.pdfIn macro / runtime command snippet
    • http://digilib.stie-yppi.ac.id/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-lost-cheats_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/tiktok-watch-free-movies_GM835599320.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robuxs-pate_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repositoIn 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_off000029a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29A7 21972 bytes
SHA-256: 1283b74e0e765ac1a7771ab1592fb62f4d76dfe33036133346d71e3765d2d0b7
font_01_sfnt_off00005a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2D 19344 bytes
SHA-256: aed9e49b841e2b30020a2fe5556f9c0ffaa8e6c4658ddbbe32c8b01899028436

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