Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a85c9d17c9cbee9…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 13:59:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 87797548d4cfc4ba6823075bb0400758 SHA-1: 9e911be90acd77a734e0dfe9c6338eaecb0993d4 SHA-256: 8a85c9d17c9cbee9b4705831f99db3bee8da4f616e0f75dbf2e417a61d6e61d1
82 Risk Score

Malware Insights

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

This PDF document employs a common lure of 'free game hacks' to entice users into clicking malicious links. The primary link, http://netcdn.co/app/431946152/ultimate-game-365-free-robux-game-hack, is a strong indicator of a phishing or scam attempt. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful websites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/ultimate-game-365-free-robux-game-hack PDF link annotation
    • http://artistaone.co/userfiles/files/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/is-kinetic-code-going-to-be-free-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/can-you-get-roblox-on-ps4-for-free_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-from_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-coin-master-gift-link_GM406889139.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_off00002f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1B 22612 bytes
SHA-256: 6c69c81ec750cc50982190f375bf55c644a7ea27bad3b3fba22ac637d88dcb95
font_01_sfnt_off000061af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AF 19748 bytes
SHA-256: d86cd06734fe357b7830927d1910210fc803a479aa220691ac8f57161f697936

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