Malicious PDF — malware analysis report

Static analysis result for SHA-256 62fa4e6df43b236a…

MALICIOUS

PDF

35.8 KB Created: 2021-05-25 07:00:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 33eec56510abf4496b2d25cad7a8e375 SHA-1: c4da869415d6819216ae6ed441fb032ac9bd8d0d SHA-256: 62fa4e6df43b236acf3363a2c86fef22e8965f5ff01050c59e20f0e2a2a715d5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to URLs associated with 'free generators' and 'game hacks', a common lure for malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. The embedded links likely serve to download a second-stage payload, potentially leveraging JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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 https://netcdn.xyz/app/835599320/tiktok-viewer-free-game-hack PDF link annotation
    • http://tah-li.com/images/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://tah-li.com/images/roblox-hack-download-pc_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
stream_002_off00003103.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3103 25224 bytes
SHA-256: 4b7cc220350b4a441d868343a98f3890b8328a4e8c4424999d8bf32f923abbe1
font_01_sfnt_off00006be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE9 17752 bytes
SHA-256: 03cae80738042903ed7303e5923c2b1ca7393d04b72c6adefe1e53c55c9a8aab

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