Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba892a54c5ca4a0…

MALICIOUS

PDF

33.0 KB Created: 2021-06-24 20:17:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2701683852cf1f739b8f3b49d464fa73 SHA-1: a4bb1b5b7c95086f1df6feb3922d88708672a5a3 SHA-256: aba892a54c5ca4a06edeaeeacb240f7d7178340c41583274687d93a852026eff
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/how-to-get-free-roebucks-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-money-on-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-rape_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-by-using-inspect_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-daily_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-hack-no-human-verification-2021_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
font_00_sfnt_off00002d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2B 21444 bytes
SHA-256: b4af7cf8e372a0290675bef4647b4a9fb430883c988543a00db21f15789baff2
font_01_sfnt_off00005bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFA 18944 bytes
SHA-256: bb1bb1fad87c9fcb51de89bb7266f179a7458b8a249a047c92f7843a342167cf

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