Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14a39d7e4ea82b3…

MALICIOUS

PDF

35.8 KB Created: 2021-06-28 08:07:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e2c53d78b5eda4f7079fa435d82f253 SHA-1: f5b35a7823633da6231ee0332e7dacdd665d75eb SHA-256: e14a39d7e4ea82b35af919c84b27409ec92e7cd9bbbedc9a5968e7ec258da7ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a malicious redirector, disguised as free game hacks and cheats for popular games like Roblox and Coin Master. The primary lure URL is http://netcdn.co/app/431946152/how-to-be-headless-in-roblox-2021-for-free-game-hack, which is flagged as malicious. The document's content and embedded URLs strongly suggest a phishing or scam campaign aimed at tricking users into visiting malicious 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/how-to-be-headless-in-roblox-2021-for-free-game-hack In PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-hack-back-a-roblox-accunt_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/aimbot-hack-for-roblox-cbro_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/roblox-controversy_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-kindle-fire_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/cheat-2021-robux_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/roblox-infinite-health-cheat_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/win-free-robux-robux-robux-free-new-game-order_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-mega-vip-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/como-ser-hacker-en-roblox-skywars_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000032d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D5 22772 bytes
SHA-256: 83fecc3cf265adfc4dff053ad29bc787c59d5dbd9370eb725acdbc5097fdc0be
font_01_sfnt_off000065a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A8 19388 bytes
SHA-256: a1d4fa327f8ca8a0ffb97f5629619795661aa714aae9e8e405a7fbd15e861e9b

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