Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d042db506d3451…

MALICIOUS

PDF

33.7 KB Created: 2021-06-22 14:55:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 74c86b3f46d6627733ef5bfcd2a464b0 SHA-1: 3a3b4abd9007867bec5a8ef1cea9cde5beb26adf SHA-256: 45d042db506d3451508168e5a5b77ddc0cea9de1a3d8a63e20ab691158651c7b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/479516143/how-to-get-minecraft-pocket-edition-for-free-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-ing-hack-roblox-and-delete-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-gear_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-in-roblox-on-phone_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-accounts-webbly_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-free-version_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-paintball-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-coins_GM406889139.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-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/javascript-free-robux_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_off0000308e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308E 21596 bytes
SHA-256: c356252e129f88534ab054537a1b05bbba9d67dd75cc821de97984f28530be09
font_01_sfnt_off00005fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBF 18660 bytes
SHA-256: b13a25137ff5bf184941611dadd5274b7697b7880b48ae01eb7c808e4237078c

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