Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a3cb2ca3df7cce…

MALICIOUS

PDF

33.8 KB Created: 2021-06-28 03:03:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 290a21a1749b9a8102c2459869b9baa8 SHA-1: ebed38b15c00b2fa4e8e78837afd4f8a62426b32 SHA-256: 52a3cb2ca3df7cce33dd5df37d6b2df8e62aa7bb387d77784d916729686a2095
82 Risk Score

Malware Insights

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

This PDF document contains numerous URLs and text strings related to game hacks and in-game currency, indicating a lure for users seeking such exploits. The presence of external URIs and the ML classifier's high confidence score suggest malicious intent, likely to redirect users to a site hosting a malicious payload or phishing page. The document's content and structure strongly suggest it is part of a phishing campaign aimed at tricking users into downloading malware.

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/youtube-inquisitor-master-my-roblox-account-got-hacked-game-hack
    • https://www.wannon.tw/upload/files/free-minecraft-printables_GM479516143.pdf
    • https://www.wannon.tw/upload/files/coin-master-hack-https-coinms-net_GM406889139.pdf
    • https://www.wannon.tw/upload/files/cute-free-stuff-on-roblox_GM431946152.pdf
    • https://www.wannon.tw/upload/files/wurst-minecraft_GM479516143.pdf
    • https://www.wannon.tw/upload/files/free-robux-com_GM431946152.pdf
    • https://www.wannon.tw/upload/files/roblox-grand-blox-auto-2-all-cmds-hack_GM431946152.pdf
    • https://www.wannon.tw/upload/files/robux-free-com_GM431946152.pdf
    • https://www.wannon.tw/upload/files/hack-robux-codes_GM431946152.pdf
    • https://www.wannon.tw/upload/files/games-to-get-free-robux_GM431946152.pdf
    • https://www.wannon.tw/upload/files/free-tiktok-followers-quora_GM835599320.pdf
    • https://www.wannon.tw/upload/files/how-can-you-get-robux_GM431946152.pdf
    • https://www.wannon.tw/upload/files/robux-hack-me_GM431946152.pdf
    • https://www.wannon.tw/upload/files/roblox-cheats-adopt-me_GM431946152.pdf
    • https://www.wannon.tw/upload/files/coin-master-hack-version-download-2021_GM406889139.pdf
    • https://www.wannon.tw/upload/files/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • https://www.wannon.tw/upload/files/minecraft-apk-download-free-11-055_GM479516143.pdf
    • https://www.wannon.tw/upload/files/hack-someone-on-roblox-and-steal-their-robux_GM431946152.pdf
    • https://www.wannon.tw/upload/files/roblox-hack-ga_GM431946152.pdf
    • https://www.wannon.tw/upload/files/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • https://www.wannon.tw/upload/files/how-can-u-get-free-robux_GM431946152.pdf
    • https://www.wannon.tw/upload/files
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a2f.bin
773f13b33231b105e16d0c9fe7cc8ffbb71323a8916e517833038a5bbe8230b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2F 22544 bytes
font_01_sfnt_off00005c90.bin
30fa008dd062f508020aa43026f756c5b39f4d4551d6d5010eeb3b44766457b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C90 19904 bytes