Malicious PDF — malware analysis report

Static analysis result for SHA-256 283cf2859144fbe9…

MALICIOUS

PDF

33.6 KB Created: 2021-06-26 20:57:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 085098121beea7f2916f7b19e5b8e39c SHA-1: 50dcbc01640f93fd845fe3b45a91aee78a3c2361 SHA-256: 283cf2859144fbe9d31712aad93d193437c752edadb43a607fa61a2a7f7f42a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/roblox-tower-battles-credits-hack-game-hack, which is associated with known malicious redirectors. The document body and embedded URLs strongly suggest a social engineering tactic to trick users into downloading potentially unwanted or malicious content.

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/roblox-tower-battles-credits-hack-game-hack In PDF document text
    • http://www.sfakia-online.com/images/how-to-hack-the-powerplant-inside-roblox_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/robux-hack-on-apple-computer_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/roblox-supreme-hoodie-free_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/microsoft-robux_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/roblox-wall-hack-for-mac_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/all-black-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://www.sfakia-online.com/images/roblox-code-free-beyblade-burst_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/descargar-hack-roblox-funcional_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/abs-roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/claimfree-robux_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/how-to-use-the-blackout-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/free-robux-glitch-code_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_off00002e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E25 21520 bytes
SHA-256: 29d3ebd2c9d717c9e5be354c44da02fb720e81b5472329781fe49ae901140fb2
font_01_sfnt_off00005d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D92 19220 bytes
SHA-256: 326819ccaf69e4f64d2426fcb0a4986bc94436b5aef103a3edaf0dab891e0afa

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