Malicious PDF — malware analysis report

Static analysis result for SHA-256 90298f4decdcceae…

MALICIOUS

PDF

32.2 KB Created: 2021-07-20 02:23:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cc7b95224a8f257fb24c19c569c0bdd8 SHA-1: d6ba61b2ad19c088c9a7c0a78b89431d953a64d3 SHA-256: 90298f4decdcceaeb0e5957812557ede94481f200e43ac656c6f0e749013dcdd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free Robux' and 'game hacks'. The heuristic firings indicate the PDF is designed to lure users to these malicious redirectors, which likely serve as a gateway to further malicious content or exploits. While no scripts were explicitly extracted, the nature of the redirector links suggests a potential for client-side exploitation or download of further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/431946152/free-robux-link-game-hack In PDF document text
    • http://hakuna.co.za/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://hakuna.co.za/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://hakuna.co.za/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://hakuna.co.za/images/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • http://hakuna.co.za/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://hakuna.co.za/images/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/how-to-hack-minecraft_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
font_00_sfnt_off00002c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C04 21628 bytes
SHA-256: c441c34086932f86e74e6f2e00219dc030557d972b0a559904629d95c673924c
font_01_sfnt_off00005b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6C 18492 bytes
SHA-256: 9eca6fbd5cd0f37ed8ace88e5720e13af9d6cfc94b1f583cbfa8342fc703f104

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