Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46f03ee7f819d53…

MALICIOUS

PDF

34.0 KB Created: 2021-05-22 12:20:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d5ef62c6fe6adb8c28deda0c6eb476f0 SHA-1: ab606b5e841e8c2301812fa52f104bd1c24dde00 SHA-256: c46f03ee7f819d538bf9dca80b86882a2e688763d3d28a1337c20935d8b78c30
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9505

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-free-fans-game-hack PDF link annotation
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-tiktok-followers-without-human-verification-2021_GM835599320.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/minecraft-bedrock-free-download-pc_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_off00002e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E00 24064 bytes
SHA-256: 2a280354e10bc5f528b9f7bc1710ade9735b170d0716105b8d17b480b3490aff
font_01_sfnt_off00006523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6523 17684 bytes
SHA-256: 4a9e05c682d6810de0feb86162fa18badead57ff55ae6cc117977f414faa10b0

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