Malicious PDF — malware analysis report

Static analysis result for SHA-256 714a404f1e29ede3…

MALICIOUS

PDF

44.5 KB Created: 2021-06-07 15:19:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: db6f3e2c28a27003b0383c1b96dc2850 SHA-1: 55444fbf396486668b5dc8aae50a4f7ee3a2b96c SHA-256: 714a404f1e29ede3070feaaa33d52e38f61e3d70fa4d8a7bb5d22f9f54868958
82 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF document contains an external URI pointing to a potential game hack or cheat engine, and the document body itself suggests a lure for downloading such content. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document instructs the user to paste content into a command-line interface, likely to execute a downloaded payload. This suggests a malicious document designed to trick users into downloading and running malware, potentially via PowerShell.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.tw/app/431946152/robux-cheat-engine-game-hack PDF link annotation
    • http://feuerwehr-rheinau.de/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/robux-match_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/tiktok-free-verified_GM835599320.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-codes-2021-real_GM431946152.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_off0000510e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x510E 24724 bytes
SHA-256: c5da11eabe3cff91cb61106505176c495eb811d26a988b4199695d8c4032a892
font_01_sfnt_off000089d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D8 18756 bytes
SHA-256: fc9409b3550d73ac0a339a4efc86a54a1a22c91af53e6421f477114a25109963

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