Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8a91beb7d18fe06…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 23:54:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5dbf933c5a257b6c1555f8cd4be55fd2 SHA-1: 2c1e7090c4408f0f6c97ec021c251af94d997178 SHA-256: a8a91beb7d18fe064c7a517576e94e83b3363ab5b3e72720625a92bc6fed7eb9
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.co/app/431946152/free-robux-site-youtube-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/rd-cash-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robloxcom-free-robux-games_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/inject-hackcom-roblox-app_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/gift-card-codes-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-to-make-you-move-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/aplicaciones-de-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-u-undo-someone-hacking-ur-roblox-acc_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/get-free-robux-com_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_off00002f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F46 22016 bytes
SHA-256: f3dbd84aa5fed75bb922a1d1ffa212a83703456d2a6ca32634f60acaf1560b5e
font_01_sfnt_off00005ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFD 19100 bytes
SHA-256: f88c0fabd51ed5e0d16683e504315d816add45f0f9f0c30e8518e89cc6e63b18

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