Malicious PDF — malware analysis report

Static analysis result for SHA-256 18cafde1a1eabc18…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 16:24:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b74117fa3b8170ced1d8f8977b6396b9 SHA-1: bdc259bbc62cd39ca2c5d66a6b32bb9b934b8ca4 SHA-256: 18cafde1a1eabc18dc48dcc815ddb5643703e70cd6bfec3fc1e0689f164ab018
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, specifically targeting users interested in game hacks and cheats for popular games like Roblox and Coin Master. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. The document body, though partially garbled, contains URLs that reinforce this theme. The primary attack pattern involves directing users to potentially harmful websites through deceptive content.

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/http-roblox-cheat-net-game-hack In PDF document text
    • http://www.psychom.com/storage/editor/files/hack-treasure-hunt-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/hack-script-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/how-to-fly-in-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/roblox-phantom-forces-free-robux-bot_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/free-robux-grould_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/roblox-free-items-site_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/get-free-robux-robloxcom_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/minecraft-iphone-free_GM479516143.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_off00002f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F16 22256 bytes
SHA-256: bbbc57d9fcebcc2dbbd68939c214f44c0c7af481ba4ea944fc6a1152e7c0692c
font_01_sfnt_off000060b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 18932 bytes
SHA-256: 954c6581f382a9773e6fd61096403d9a5990db7765b91165e69f8061958e4ef3

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