Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9914d51bf705f6c…

MALICIOUS

PDF

41.4 KB Created: 2021-05-17 09:19:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f1cf2889efc94b408d0457235e300c16 SHA-1: e0f1dd1cb846de7d747487b73c7ccc00ab5b6d96 SHA-256: e9914d51bf705f6cf47e243c157b2d443d4d8c408a6cd559b94790b967a7fa48
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure URL is https://netcdn.xyz/app/431946152/10-robux-game-hack, which is associated with known malicious redirectors. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting these sites, likely for further malware delivery or credential harvesting.

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/431946152/10-robux-game-hack In PDF document text
    • http://forsazh-51.ru/images/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/mc-update_GM479516143.pdfIn PDF document text
    • http://forsazh-51.ru/images/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://forsazh-51.ru/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/roblox-free-printables_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/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://collectrobuxIn 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_off000044de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44DE 25692 bytes
SHA-256: 5fe7a20d7d54ad95ed11ee72e49912febdef17dd3ac92bb73dfa35169af7e189
font_01_sfnt_off00007fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC0 18128 bytes
SHA-256: fb53eb8f562c6c3a474b0aae8a68110d7a73c6f4157a43be3cf25a32a3453b93

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