Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b081f5a42a4d5b…

MALICIOUS

PDF

32.6 KB Created: 2021-06-29 10:42:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6eac28884ead35acc4b51bd6be2d2e88 SHA-1: 57fa6e02ce2b8cdd84847686dd7b85615f15dd97 SHA-256: 10b081f5a42a4d5b689e2bb9f37cf79eb10e0c7e5d7fee54e63f0a4588b11e24
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector service that hosts game hack lures, specifically targeting Roblox players. The primary link, http://netcdn.co/app/431946152/hack-to-make-you-move-in-roblox-survivour-game-hack, is flagged as malicious and part of a known redirector infrastructure. The document body also contains a call to action to 'CLICK HERE TO ACCESS ROBUX GENERATOR', reinforcing the lure. While no scripts were extracted, the embedded URLs and the nature of the lure strongly suggest an attempt to redirect users to a malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-to-make-you-move-in-roblox-survivour-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/script-for-robux-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-annoy-roblox-server-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/20210-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/yammy-xox-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-hack-no-offers_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/xdaniel-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/bhop-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-hack-on-roblox-null-injection_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-account-hacker-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/infinite-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robux-adder-hack-download_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-shark-teeth-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-money-in-ultimate-driving-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-free-robux-on-phone_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_off000029e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29E4 21840 bytes
SHA-256: 11b915eb1a80f97b944cb7fe8c6f93a83b2d8bd4577dfad529853fd6bb671d62
font_01_sfnt_off000059b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59B5 19388 bytes
SHA-256: eaba84f9f91a04f7a24b36cda79fe98c5093a72ffc4b40a26cccfacde7834cbb

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