Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4c2318e567378f…

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 20:35:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: e81ed75521735dcd0cbd4fb1e6086c72 SHA-1: b957f1e071113ce79283139be361c6992d66eed3 SHA-256: 9e4c2318e567378f1c804c80818bc142561d36e0ec4426cb9322defe435ce56d
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 0.9971

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/431946152/generator-robux-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/open-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-roblox-website_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_off00004ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD8 25488 bytes
SHA-256: f72719a88b8f33844bb98f7a2c0dfa6dfd2984718a4e456c75bd4f6279ed2335
font_01_sfnt_off00008474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8474 18184 bytes
SHA-256: b4ce75e5ef7529b15199eebab458c6aae3f76f2df33fea1dae4b183417bcc22e