Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d951923e8825ab…

MALICIOUS

PDF

32.8 KB Created: 2021-06-25 13:56:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: e67d91753e307998144b9dac9f25e61b SHA-1: 8665b9f5e024c2a6263e00e9d71094e0e20c33c1 SHA-256: c5d951923e8825ab850fd932e430d7c6b4b2aadc7a2c46c04f6a24548b20d080
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/how-to-get-free-hat-in-roblox-2021-game-hack In PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-codes-on-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/cheat-roblox-mad-paintball-2_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/pants-roblox-girl-free_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-spawn-in-models-hack_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/robux-redeem_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/hack-download-for-btools-roblox_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-free-roblox-premium_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_off00002cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFE 20836 bytes
SHA-256: 582de9d6bbfbe35b747cfdde36a49eda206d6a28fb256b96edc60a389d86182f
font_01_sfnt_off00005a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A05 19320 bytes
SHA-256: 0e8fa20d759c6d3bfad81b470c9a01331883d5e462e086eac595039043d630b2