Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc617890e9a656d…

MALICIOUS

PDF

35.2 KB Created: 2021-06-18 01:34:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 22ac7e5179843cef1a7c2a639c6f65c7 SHA-1: 8bccef765ca2759b94296aa4a758288c40096aed SHA-256: 2fc617890e9a656d962c3015b308131dc530cca415eb2def56c30ff192971251
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 0.9980

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 http://netcdn.co/app/431946152/roblox-free-executor-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-free-school_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-dungeons-free-download_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_off000032ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32EC 22600 bytes
SHA-256: b013c6293255065f37122215abecd0d3da3b2d22ef9c49cead81b43e29d6d339
font_01_sfnt_off00006574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6574 18708 bytes
SHA-256: 4ed2842e76748062236de9b831d21e6863c52f8eda3355b136d7104b63c9a34e

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