Malicious PDF — malware analysis report

Static analysis result for SHA-256 53bb52d5fbafa1da…

MALICIOUS

PDF

33.8 KB Created: 2021-06-19 04:12:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d3d0a73126328ae301fbff8e9dacbc99 SHA-1: acd5b352b173ee7cd9ccd8dd8afe10a3cbb8cf15 SHA-256: 53bb52d5fbafa1da0b0c31274ab38296b16c4a370cca701521511f30daf76057
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising free game hacks or currency. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The presence of a visual download button further supports the lure tactic.

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/cape-roblox-free-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-jailbreak-how-to-get-bugatti-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-military-pants-template-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/robux-in_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-the-labyrinth-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-robux-for-free-on-pc-without-downloading_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-cheat-codes-builders-club_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/fortnite-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-exploits-for-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_off00002ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECD 22156 bytes
SHA-256: 04e27629ce6e8172a69619536b48e336527ee5acd0b97ac8863678335216b202
font_01_sfnt_off00005fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCD 18824 bytes
SHA-256: d69ca2e5542947304b77b14c36c3612b2fa04d8214289ac4e733972b74b31c1b