Malicious PDF — malware analysis report

Static analysis result for SHA-256 10a685b6f5778793…

MALICIOUS

PDF

39.1 KB Created: 2021-05-22 07:16:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f2cfcdedb853e978a299905896c096fc SHA-1: 6acb9d337c6c304cd608e88c2d97bbe685c57e09 SHA-256: 10a685b6f5778793308e984b37663862adf4ade46adb5476025185c9ef6403f7
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 0.8060

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-bedrock-server-hosting-free-game-hack PDF link annotation
    • http://rainbowbuddha.academy/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/robux-sites_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35F9 24148 bytes
SHA-256: a2bc64a9fd85e5b5fe6eae0b5faa88daee3f56d49b936e44005305a77d096e99
font_01_sfnt_off00006ca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA4 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off0000764b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764B 18672 bytes
SHA-256: c45ccb7756ad31f0eb1659f3c43916dbd490baa96d6c6b1730beaec095da97be

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