Malicious PDF — malware analysis report

Static analysis result for SHA-256 de9f893b9fb060d0…

MALICIOUS

PDF

33.9 KB Created: 2021-06-26 23:17:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc91c7f08e20bce89ebec75a9bc96cf6 SHA-1: 2de43cbe04d4c9a113f2b951c7f45e6855f66492 SHA-256: de9f893b9fb060d08804cc102e94bffceb453c53b429b66290b32caa58ea3aab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including a primary link to 'http://netcdn.co/app/431946152/free-roblox-without-verification-game-hack', which is identified as a malicious redirector. The document body and heuristics indicate a lure for game hacks and generators, suggesting a phishing or scam attempt. No scripts were extracted, but the presence of malicious links and the lure pattern strongly indicate a malicious intent to redirect 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/free-roblox-without-verification-game-hack In PDF document text
    • https://silvterie.com.br/images/ckfinder/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/robuxian-com-free-robux-code-generator_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/roblox-rhythm-track-hack_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/can-you-get-banned-from-hacking-roblox_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/how-do-you-get-robux_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_off00002d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D47 22040 bytes
SHA-256: a21ee775f6877e594b471d191f9f5a9c8c662263e2425223263c0540d512d11f
font_01_sfnt_off00005df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF4 19512 bytes
SHA-256: c78bca9295cce22c0110f8a76214e4c13ff38fd53f00d75814f4253d1e003ea1

Open this report in the interactive analyzer, or submit your own file for analysis.