Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc49d0cbe2c66ad5…

MALICIOUS

PDF

31.3 KB Created: 2021-07-19 01:24:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d19fe264f408ec9d958be001ece10099 SHA-1: a614613bfaa042981ae1b16275058a809d9e2f8d SHA-256: fc49d0cbe2c66ad56d1633950b23d8207cfa441dcfbefa4fd4c4187db8668ed6
160 Risk Score

Malware Insights

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

The PDF contains multiple links to malicious redirectors, masquerading as "free Robux" or "game hacks" to entice users. The primary lure URL is http://netcdn.tw/app/431946152/free-robux-card-codes-game-hack, which likely leads to further malicious content or exploits. The document body also contains a call to action to "CLICK HERE TO ACCESS ROBUX GENERATOR", reinforcing the deceptive nature of the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9892

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-card-codes-game-hack In PDF document text
    • http://italianconnectionsleaford.co.uk/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/minecraft-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
font_00_sfnt_off000026a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26A9 22088 bytes
SHA-256: 1c43077eb73d89253c9084292890b3d3f6dd74694e955c0b0992ad8481f5b085
font_01_sfnt_off00005769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5769 18604 bytes
SHA-256: 76f154967b1764cdb0e080aec3bf58540dd9c05f424ffe6cf9398947fbdad8ca

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