Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecbfaf37e2ae2000…

MALICIOUS

PDF

35.4 KB Created: 2021-06-30 09:49:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 31fd83b22ea9e9108c96c2df35b61e4f SHA-1: 6198db7f20daa8b21f5c198bcda181d0ecf29cbc SHA-256: ecbfaf37e2ae2000cd8265df574566688ee79efb4ca709938f165fa9a550cb75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a 'game hack' generator. The primary link, http://netcdn.co/app/431946152/how-to-hack-in-the-void-booga-booga-roblox-game-hack, is flagged as a malicious redirector. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-hack-in-the-void-booga-booga-roblox-game-hack In PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/nicsterv-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/hack-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-ultimte-gamer-365_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-website-safe_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-lifting-simulator-free-vip-server_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-hacks-2021-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/backdoor-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/hack-para-atravesar-paredes-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-free-robux-in-roblox-easy_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-jailbreak-how-to-get-money-free-and-fast_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/how-to-hack-roblox-accounts-2021-using-cmd_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-codes-on-roblox-mining-simulator_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/hack-mod-menu-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/how-to-hack-your-friends-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-ban-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/android-hack-para-tener-robux-en-roblox_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_off000031b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B9 22588 bytes
SHA-256: 71cb4ceb3ce05472e178e9615c239d9c44956217572f350ec90a90bd146d6cd0
font_01_sfnt_off0000641b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641B 19412 bytes
SHA-256: e88f9f9f2ed125f7f47e602d29cf966bb0ad809bf4130965e9e9af4d100ef617

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