Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f68f73b29360a6…

MALICIOUS

PDF

36.9 KB Created: 2021-05-21 21:37:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f56925e4d45748b8eddab05cec643f52 SHA-1: 297c3fd8aa68106e912efd8c0a48870bf8b9ffeb SHA-256: 84f68f73b29360a6861a479093f8a7a32ce0ff73fcc998051043b882464478c2
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/479516143/minecraft-realms-free-trial-game-hack PDF link annotation
    • http://dennemaat.nl/images/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://dennemaat.nl/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://dennemaat.nl/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dennemaat.nl/images/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://dennemaat.nl/images/free-robux-download_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_off0000351a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x351A 26000 bytes
SHA-256: 6e691c82f55a7ee265685f715927ebedb60913e8474dd6090db793a338eedfee
font_01_sfnt_off00007039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7039 17900 bytes
SHA-256: 5e9e7e4dd5050dedb25c4bef302629088f41d3cb5f82066cb4e6c0f6a9bca7dc

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