Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1c5c169a5e93dc…

MALICIOUS

PDF

38.6 KB Created: 2021-05-25 09:33:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 711871f8e911cf39f3547aca2d930188 SHA-1: bfae0c1cc7cbd18d5a771afa6ea9f2498c906e76 SHA-256: ec1c5c169a5e93dc8446ae1dcc74e89caaffc65a7e8bb9c61d392eb844539b5f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "free generators" and "game hacks" to entice clicks. The primary lure URL is https://netcdn.xyz/app/431946152/how-to-get-free-robux-on-ipad-game-hack, which is associated with malicious redirector infrastructure. The document body and embedded links suggest a social engineering attempt to drive traffic 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/how-to-get-free-robux-on-ipad-game-hack In PDF document text
    • http://artenossa.net.br/images/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://artenossa.net.br/images/free-tiktok-app_GM835599320.pdfIn PDF document text
    • http://artenossa.net.br/images/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://artenossa.net.br/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://artenossa.net.br/images/free-minecraft-alts_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_002_off00003675.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3675 26156 bytes
SHA-256: e39de1a1d151784e5a7b4e7241d20c509c8d0ab718662fd79e4fe93bb8747c46
font_01_sfnt_off000073a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A8 18860 bytes
SHA-256: df018bfb15659bb80b7243956be10673ebd99e13a4c75edb6b924f306f4c3bfe

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