Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4d30f60a26d53f…

MALICIOUS

PDF

34.2 KB Created: 2021-07-20 06:34:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9973d458b281645fc49967cd9f5ea76f SHA-1: 64c3245a597dd70e2c992650221b28a366bc336e SHA-256: 9e4d30f60a26d53f3bc2329abb9078774061e404809e9dcb03826da3405599d4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a lure related to 'free followers on TikTok' and 'game hacks' to entice users. It contains multiple embedded URLs pointing to websites that likely host further malicious content or phishing pages. The ML classifier strongly indicated maliciousness, and the PDF's structure and content align with social engineering tactics to redirect users to potentially harmful sites.

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/835599320/how-to-get-free-followers-on-tiktok-game-hack PDF link annotation
    • http://hospitalsalamanca.cl/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/robux-com-free-robux_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_off00003407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3407 22260 bytes
SHA-256: 6d43a36e170736c6421049cf232d42c9a74d03cd7233b93501f140bf42d2b998
font_01_sfnt_off00006586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6586 17692 bytes
SHA-256: c8a0034b4012066e27b368389264813a3515151838273d971ed31104f84b04bc

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