Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b19be2e8c3007b2…

MALICIOUS

PDF

37.6 KB Created: 2021-06-19 17:15:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f2efdbfbd7d8b1ad8169af2b44337e48 SHA-1: 1166fcd25fdae2273c1256c4cd7ca2a09d0b91be SHA-256: 8b19be2e8c3007b2da8f22cc629953df9ca6898b3124e4abcf559e12150c7666
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 0.9981

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/hack-mod-roblox-apk-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/como-tener-hacks-en-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-sites_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/descargar-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/get-free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-character-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-someone-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/vip-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003c31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C31 22264 bytes
SHA-256: 851763dfa5df53390e30b5bbc5f1b9959c3f3071c4d6e51a4b1a0dc2cb0d4913
font_01_sfnt_off00006d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D94 19200 bytes
SHA-256: cf53f06d7b8af7e6ba2c6115e1d418636c2c714043a003daad0119cb0cc81ab1

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