Malicious PDF — malware analysis report

Static analysis result for SHA-256 48044b52eedd91d3…

MALICIOUS

PDF

35.2 KB Created: 2021-07-20 03:00:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a2960a9245542fbc7b6fbfadaa52279d SHA-1: 83843b24c8f600b69f69b8ff7953360c36b14319 SHA-256: 48044b52eedd91d324ada1070f6d7130c93ee658b553d73d0c07621ce4c1bea2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase designed to trick users into believing they can get free TikTok followers or game hacks. The primary link, http://netcdn.tw/app/835599320/free-tiktok-followers-no-verification-or-survey-game-hack, is associated with a high-severity heuristic indicating a lure for such generators. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a malicious intent to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9294

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/free-tiktok-followers-no-verification-or-survey-game-hack PDF link annotation
    • http://hilro.co.za/images/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC1 21864 bytes
SHA-256: 7319246d38fd6baec96852ba64c6e1691978aee0541e274dd4216b5d8581efad
font_01_sfnt_off00005bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC4 3124 bytes
SHA-256: d6dd29adb69da7f9a23a5e3791282a61e2f811794f560a0c409c8747766d9102
font_02_sfnt_off0000667d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667D 18492 bytes
SHA-256: 4d8c0727d58b59d2b63319bab821bc095baa93826ac3da826e0a8bde5531d4a4

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