Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8eb2a65444d0e16…

MALICIOUS

PDF

32.3 KB Created: 2021-06-20 11:47:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a04f20be98d8e4243d9f7e3df84b9415 SHA-1: c008ad83965622851cc6a72adbb7ea220d679fb1 SHA-256: f8eb2a65444d0e169b35437e1ebdb4d18dfd769485c52ddc3521cb30b4ad2049
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that lead to known malicious redirectors, disguised as 'game hacks' and 'free currency generators'. The primary lure URL is http://netcdn.co/app/431946152/how-to-hack-any-roblox-game-2021-game-hack, which is flagged by multiple heuristics as malicious. The document body reinforces this lure with similar themes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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-any-roblox-game-2021-game-hack In PDF document text
    • http://www.elibrary.perludem.org/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/pastebin-free-robux-code_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-roblox-wikihow_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3264 22812 bytes
SHA-256: 6285558c383942321eb36ef11310776defc65db7bfefc0f2a1591190f8664208