Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd47d1bfccc2105b…

MALICIOUS

PDF

36.0 KB Created: 2021-07-03 11:50:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e8b9c201e37a28eb9d4d211a5084e954 SHA-1: 25c87fe196a40d4f1aa2274da462a2905a49e841 SHA-256: bd47d1bfccc2105b0a1690a04f4623c7e6590f05ce3e974314af9197d090c479
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.tw/app/431946152/flame-roblox-exploit-free-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk//repository/static-moonactive_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/tiktok-free-booster_GM835599320.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/nelson-diamant-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/can-you-go-to-jail-for-downloading-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-have-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/g00d-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/click-here-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/general-roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-home_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/win-2021-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/jailbrreak-roblox-free-battle-royle-code_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/counter-blox-roblox-offensive-hacks-walls_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/robux-help-com-to-earn-free-25k-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/real-robux-codes_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_off000034be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34BE 22696 bytes
SHA-256: 9daee156036096ed1042a981970bdbc85f0a8e88f619e4ea83a6ea3e7a5d0a95
font_01_sfnt_off00006784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6784 19124 bytes
SHA-256: 9932ec4cded18f1bbfc727a25246216ba2311b00a856b3243f6e84c31808ccb8

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