Malicious PDF — malware analysis report

Static analysis result for SHA-256 f811d7b848518edb…

MALICIOUS

PDF

33.1 KB Created: 2021-06-18 07:27:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 76fb339d0080ab1b6644b4f857001384 SHA-1: a31bc0de1ce397d92ebc628cce4a3dfc8f665989 SHA-256: f811d7b848518edba970ec8b15eca7a7651b676f9e8a8f9713ae5b9df0268992
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The primary redirector URL is http://netcdn.co/app/431946152/how-to-get-free-rap-roblox-game-hack. The document body and embedded URLs suggest a phishing campaign targeting users interested in game-related cheats or currency. No scripts were extracted, but the presence of malicious links indicates a likely attempt to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/how-to-get-free-rap-roblox-game-hack In PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/robux-earner_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-robux-that-really-works_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/scripts-hack-for-roblox-r2da_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-hack-in-robux-easy_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
font_00_sfnt_off00002d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D9F 21440 bytes
SHA-256: dc390ba07050783d3eb5ce79bac5d3c3fa8cf74d88c3090cd86eafada438a066
font_01_sfnt_off00005c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C78 18908 bytes
SHA-256: 0632e2196013724c01934e95b8cd8b49d32507e022bcefee6cbc60a303422add

Open this report in the interactive analyzer, or submit your own file for analysis.