Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db03394b194fa58…

MALICIOUS

PDF

44.2 KB Created: 2021-05-11 21:00:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3f710d62e428158286e13c4b56d09085 SHA-1: 914e55446badac7a3dd2cd78a6be9cd652a77f3e SHA-256: 8db03394b194fa58a3fb95202feee64451d39b0dd9033f287848b73abb443179
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 0.9976

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.xyz/app/479516143/how-to-hack-a-minecraft-server-and-make-yourself-op-game-hack PDF link annotation
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-roblox-accounts-with-robux-that-work-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
stream_003_off00004fe3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FE3 24732 bytes
SHA-256: 9a937e6afb808f4004433393af1ca2df51c63e6fb21338b548cac06fe18ed2f5
font_01_sfnt_off000088bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88BC 18884 bytes
SHA-256: c6c75348c8512da505ae943a266b7446b2e14ebdee3fe9748eb8d749779a3ee4

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