Malicious PDF — malware analysis report

Static analysis result for SHA-256 df43e6bc92e3d366…

MALICIOUS

PDF

33.9 KB Created: 2021-07-07 22:44:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 115969848849b8656b849fad2715e896 SHA-1: cad8742ba2c0dd8f6233a1e77a83ff039bead679 SHA-256: df43e6bc92e3d3664b363e22bf8d0306b293d53d21fc1165750d30cd11775c20
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/406889139/20-free-spin-link-coin-master-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/roblox-hack-no-survey-no-download-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-gift-cards-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-automicattley_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/auto-keyboard-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-promo-codes-2021-august_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-limiteds-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-get-free-online_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/easy-hacks-roblox-download_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-toy-codes-list_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-more-robux-for-free_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_off00002ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED8 22280 bytes
SHA-256: 584c1c5a35de10c37eb8992b9c2b943c1c30f0ad55bc23340eeade031b7ccc07
font_01_sfnt_off0000607e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607E 18640 bytes
SHA-256: 1e3f3b3c18bd14673104f6b6dd19f58d422a9a34ae0bbf2597c81585bf1c1911

Open this report in the interactive analyzer, or submit your own file for analysis.