Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66f6c272db09100…

MALICIOUS

PDF

35.4 KB Created: 2021-06-29 07:11:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cef55dbccb823b9336ebed74481c9791 SHA-1: c8c705a807874b6012ef97c15735e98d4d5ea76c SHA-256: a66f6c272db09100ed952764e4794d3ef9d0b621522d413c4565fe6d84f73d3c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are identified as malicious redirectors or host lures for game hacks and cheats. The document body, though partially corrupted, contains text related to 'Hack Kill Roblox' and URLs that align with the heuristic findings of malicious redirector links and game hack lures. The primary function appears to be directing users to potentially harmful sites.

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/hack-kill-roblox-phone-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-app_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hack-roblox-void_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/50-robux-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000331e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x331E 22596 bytes
SHA-256: b8fb6680aef2659e6221175fa62a8686876e62b75210816f619c664eaa128aba
font_01_sfnt_off00006551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6551 19096 bytes
SHA-256: 7155d15058a3a17ec154eefa45b83dd3debde15a406f3c242a5dee9db0e71dc9

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