Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cf2a9e8bb2bbe2e…

MALICIOUS

PDF

39.8 KB Created: 2021-05-20 21:37:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6ef18672555ac1b9d10a966d9df42be3 SHA-1: d362a2ad820266d54c49f5629c755aa2b97400c9 SHA-256: 2cf2a9e8bb2bbe2e893c8a1db415e58a3ddac6ccd362c80d2fcd43273c6169dc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors disguised as 'free generators' or 'game hacks', specifically mentioning 'Free Robux'. The ML classifier also flagged this PDF as malicious. The document body and embedded links strongly suggest a phishing or scam attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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/free-robux-com-no-verification-game-hack In PDF document text
    • https://amiranet.com.br/files/files/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://amiranet.com.br/files/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://amiranet.com.br/files/files/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/make-robux_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_002_off000033e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33E6 29004 bytes
SHA-256: 9e39ff3803fe3cb739f6a749cf0489ccd7235ba63471ae09274a8f4cfa083e07
font_01_sfnt_off0000789f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x789F 18860 bytes
SHA-256: fd9d837b898dacd9f5ea22edfb03c528ade61200bf0a18b53858ad02fb024854

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