Malicious PDF — malware analysis report

Static analysis result for SHA-256 25bf218b5bc692de…

MALICIOUS

PDF

32.0 KB Created: 2021-07-05 15:03:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 500d32ccd9ab60430db47d0b2d40bb9e SHA-1: 112541deca93f51fe367d46e60101dec0d857265 SHA-256: 25bf218b5bc692de5c9c2fd4d3d468582eab21c1b3b616417a0410886d07ecd5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and content indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.tw/app/431946152/free-robux-instantly-game-hack PDF link annotation
    • https://linhkien247.vn/public/upload/files/free-uncopylocked-roblox-games-meganz_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/robux-hack-today_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/getrobux-info_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/how-do-you-hack-roblox-to-have-sex_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/hack-in-roblox-como-hackear-roblox_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/free-robux-net_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/free-robux-working-2021_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/generate-robux-for-free_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/robux-hack-my-rekoff_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/free-ll-robux_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/roblox-how-to-get-gamepasses-for-free-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000292a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x292A 21304 bytes
SHA-256: b0cd30fe4faf9daaf8f164e147bfb9af292ac139fa2a7ebcde2019ec2cbdc603
font_01_sfnt_off000057df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57DF 19072 bytes
SHA-256: 2ca9d11195de567abf4a703037006073732e9aee935d3c5754ca148439903055

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