Malicious PDF — malware analysis report

Static analysis result for SHA-256 0669ee185602a217…

MALICIOUS

PDF

36.9 KB Created: 2021-05-21 10:00:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 08bb4ea936008a38f587647dda7380c6 SHA-1: 26b83752dcb463f075a8c7bfa3ccaa07ec792a4b SHA-256: 0669ee185602a217e10ba03a737064c22e3aebc45bf866e4e00be19b396ff7b0
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 0.9447

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/431946152/games-to-get-free-robux-game-hack PDF link annotation
    • http://yogaschooldecypres.be/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/free-spins-coin-master-unlimited_GM406889139.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_off000032f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32F0 25412 bytes
SHA-256: 98da3ab333afac9979b62bbb70bee6d9f83f81228da60b3a1fad8cdb8bb4ba08
font_01_sfnt_off00006e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E13 18608 bytes
SHA-256: 08e91301afb793f0c8f569168ad93911c90315771ef2b58170e32493949df7cc

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