Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb8eeedfba2e795…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 06:54:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df2a366493376a011dff986231a9f213 SHA-1: 8455294ea0c83bf79ea1f985b3156cb3bad7dd6b SHA-256: 5eb8eeedfba2e795aa44bf5b3e6b00db871d479195696c06b614dfc8180e2598
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of free Robux and game hacks to entice users. It contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/431946152/free-robux-no-verification-needed-game-hack, which likely leads to further malicious content or malware downloads. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to 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.tw/app/431946152/free-robux-no-verification-needed-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-robux-and-tix-hack-rtm-tool_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/how-to-hack-work-at-a-pizza-place-roblox-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-how-to-get-shirt-for-free_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-project-pokemon-how-to-get-mewtwo-cheats_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/how-to-put-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-com_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_off00002f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4E 22308 bytes
SHA-256: 26f1493495ab00d6f0c3e3d918e3e0e74cb0066f267bb12b96063062c18fdbd3
font_01_sfnt_off000060eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EB 19248 bytes
SHA-256: b08a7874b1039348e697072185540dcc8349f662e13696354c6ec42bca015dfe

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