Malicious PDF — malware analysis report

Static analysis result for SHA-256 3653ed3aac2c6dad…

MALICIOUS

PDF

34.0 KB Created: 2021-07-20 07:53:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f6636eb826624a4c3017aaccbe45dc58 SHA-1: 62073cebc4aebaa9e4c4e4d32935b4854a93815e SHA-256: 3653ed3aac2c6dadbcd3b691ae9db99611df058623151a8df8ae90158f4a5eab
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a "free generator" or "game hack" lure, which is a common tactic for distributing malware. The embedded URL directs users to a suspicious domain, likely serving as a download or redirector for a second-stage payload. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious intent to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/adopt-me-roblox-hacks-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-education-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_off00002e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7E 22520 bytes
SHA-256: 110c5b4359197506871f32bc0a295bc892e70dbad992bac9536119a35e0458fc
font_01_sfnt_off000060a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A4 19016 bytes
SHA-256: e9e14d7da4eba9f50971f14cd0883cc115a33df7154713f73a6d7f08e561c6fc

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