Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d79054f9f387f3…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 09:53:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 31c889a86889ada45513c8c00e7b3428 SHA-1: 5d17d3ddce15b482fdadfa13c4fa539944cf0d02 SHA-256: c5d79054f9f387f3c0d7137a2f9db2664a3b1e1f3706a9480e04adbad43e065a
160 Risk Score

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/citizen-hacks-roblox-jailbrea-game-hack In PDF document text
    • http://cintabaca.org/katalog/repository/pubg-uc-xyz_GM1330123889.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-accounts-i-hacked_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-roblox-gift-cards-not-used_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/prisonbreaker16-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/robloxhacks_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hacks-on-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-jailbrike-hack-slurp_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/baixar-hack-roblox-winrrar_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/pubg-uc-qiymeti_GM1330123889.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-robux-2021-easy_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_off00002eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBA 23064 bytes
SHA-256: 9cdf7a17c1deb7ae231423787ce97984a45f702f44b1e97f60685e433dae3582
font_01_sfnt_off00006293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6293 19128 bytes
SHA-256: a8ad308807a7054024a6bf10928eeb0b81e95c9e13d796982fcf5e3613f55f9d