Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ec456939d595dcd…

MALICIOUS

PDF

41.7 KB Created: 2021-05-15 23:20:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e64f1920552d7db2990ea8e86a5be070 SHA-1: 7842c34cd0d3437ea3e87e6b9af8d530027ddba6 SHA-256: 2ec456939d595dcdbde4e03e727b2b22e3bf20480f5ee335ec6a4fffac061c37
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs suggest a phishing or scam attempt to lure users into clicking malicious links, likely leading to further malware downloads 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/406889139/static-moonactive-net-game-hack In PDF document text
    • http://gruporamos.do/images/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/oginject-co_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/minecraft-java-free_GM479516143.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_off000047e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E4 25796 bytes
SHA-256: fd1af3030c0e23fc1ac13558be2f304bd463e9162560a339f7aacf6d17482676
font_01_sfnt_off00008237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8237 17660 bytes
SHA-256: 6b7ab008261f630dc22e15b5ef3c221448b4794aa8c3d363ebd414377ccf7e51

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