Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2154dc35bf04b2…

MALICIOUS

PDF

47.4 KB Created: 2021-06-09 01:47:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d5f20930781f746685e2dcabb0ed8db7 SHA-1: d40ad390ec62f9e6b7fdd452e5d87c10e7262bce SHA-256: 0d2154dc35bf04b29cb548f01d49e2829c104ea98f7d1446fe499c12c4a862c9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/slurp-hack-roblox-counter-blox-game-hack PDF link annotation
    • https://goodtools.tw/upload/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/download-cheat-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-assassin_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/hack-roblox-ropa_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-roblox-wings_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FEF 25680 bytes
SHA-256: 0e1b0dccaaea2f21c12c945da6b9458a5d85115148aef8a7036a5b0caa984bd0
font_01_sfnt_off00008ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB9 3016 bytes
SHA-256: 4c3e2db5174821787a4569c9da4979555510caebd15fb9cea35573c139e242bd
font_02_sfnt_off0000951c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x951C 18600 bytes
SHA-256: ac4b09a57ca1769f4633cd0077a00d8e27caf09c981034b322377ba9422d6a4f

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