Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebd2469a69a3c0f…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 06:15:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 45c21cfca8292b46f7a29f7d18812431 SHA-1: 6a379bf633ac62a93565ce6398ec8f1aea677930 SHA-256: cebd2469a69a3c0f93f64d14dd70923165d67945e9d03bdb495e3dbb36873b30
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'Roblox Hack Cheat Free Robux Generator' and embeds a link to known malicious redirector infrastructure. This suggests the document is designed to trick users into visiting a malicious site, likely for credential harvesting or to download further malware. No scripts were extracted, but the presence of malicious links and the lure indicate a phishing or scam attempt.

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/roblox-hack-cheat-free-robux-generator-online-exploit-game-hack In PDF document text
    • http://library.ulb.ac.id//repository/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-do-i-log-into-my-hacked-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-watch-add-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/download-hack-roblox-2021-fr_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-rbxnow_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-giver-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/hack-client_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-generator-codes_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_off00002f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F99 22208 bytes
SHA-256: b885725bd770e3ba8a28626d465c037216f5c497f44d41c96bdca1651fafc690
font_01_sfnt_off000060e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E7 19528 bytes
SHA-256: c27d96eb6c754ee1c2a0243f36a327c7ad538255483d1785a4b24e1f84c7bcc8

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