Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb2ec70548f18b5…

MALICIOUS

PDF

36.0 KB Created: 2021-06-29 03:22:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e9e2fe0a5fbb3d7286bc693fd8d97469 SHA-1: c600da01e550813b845d00e2dccbedabd2cb974b SHA-256: aeb2ec70548f18b5e6a15a38b0d4bb7fdece4c46327b4e1a5ba6bf85e1650562
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for free in-game currency, specifically Robux, which redirects to a known malicious infrastructure. The embedded URL, http://netcdn.co/app/431946152/how-to-get-free-robux-without-a-human-verification-game-hack, is flagged as a malicious redirector. This suggests the document is part of a phishing or scam campaign designed to lead users to potentially harmful websites.

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-get-free-robux-without-a-human-verification-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-no-human-verification-ios-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/roblox-executor-free_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-all-roblox-games-pc_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-cheats-codes_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/get-free-robux-no-download-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-2021-july-easy_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/ban-script-for-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hack-app-download_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-no-human-verification-not-clickbait_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-stuff-in-roblox-dragon-riders_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-minecraft-windows-10-account_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_off000033ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33CE 22480 bytes
SHA-256: ed103ab2664d151b44625372431ebf2f621b009ae2132b09eecb09e79758c314
font_01_sfnt_off000065aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AA 19860 bytes
SHA-256: 217558b5a07e9ddf366c997011a181ad037daed901c79642152e92af02c23260