Malicious PDF — malware analysis report

Static analysis result for SHA-256 868cc717a7db7e8e…

MALICIOUS

PDF

42.6 KB Created: 2021-05-15 06:19:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e9f62d73c5cc2dcd3b0dc7fe5cb2baba SHA-1: 732fcc04d5a8efb5bf7c08db550cc59367e9d044 SHA-256: 868cc717a7db7e8eb80d9b1ef0e3da692ab4d0af7db1e3a81b9d19592f7b9947
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one pointing to known malicious redirector infrastructure at 'https://netcdn.xyz/app/406889139/coin-master-daily-spin-link-app-game-hack'. The document body and embedded links suggest a lure for game-related cheats or generators, a common tactic for phishing or malware distribution. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-daily-spin-link-app-game-hack In PDF document text
    • http://forsazh-51.ru/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://forsazh-51.ru/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://forsazh-51.ru/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/infinite-robux_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/robux-free-2021_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
stream_003_off0000496a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x496A 26032 bytes
SHA-256: 13c976b15c715da0afb3f01a3419db75eed4caea6fa775f66ce167c0aa8fb1e5
font_01_sfnt_off000083d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D9 18316 bytes
SHA-256: 1c8f52e50ef16cca0df83ed02daf45b2dac44b7d574d319931a9576780881370

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