Malicious PDF — malware analysis report

Static analysis result for SHA-256 e540e638b22a8f17…

MALICIOUS

PDF

33.3 KB Created: 2021-06-17 19:08:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: aa06048a1348892856ec6dc62d1a4d88 SHA-1: ddc8a863795a37852fe260b2765f2155c33f11a9 SHA-256: e540e638b22a8f17c84565272947232d4625eaabcbf9021b201b8804d775e464
82 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and text related to game cheats and hacks, strongly suggesting a lure for users to download malicious applications. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may also attempt to trick users into executing commands, further supporting a malicious intent. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-bubble-gum-simulator-cheat-game-hack PDF link annotation
    • http://www.hlad.hr/files/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-bighead-hack_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/cheat-roblox-diamond_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/mpgh-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.hlad.hr/files/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-cracked-minecraft-server-hosting_GM479516143.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
font_00_sfnt_off00002bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF9 22048 bytes
SHA-256: e44e424655c799ef58c972ad23055d4e209765eb1a35c9674269912bf170098d
font_01_sfnt_off00005cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF8 19088 bytes
SHA-256: 5b5fe0635acb610099ee3e6747cad0e7d54f683a2f25bf8bbe4317661b10e2ee

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