Malicious PDF — malware analysis report

Static analysis result for SHA-256 592436f3335fd143…

MALICIOUS

PDF

36.9 KB Created: 2021-05-22 09:37:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 586f94e5021430326068c46d49b51785 SHA-1: 17e2aace3dcb5978cb3d5bf5ba6dc56a0e9867ce SHA-256: 592436f3335fd14331f83e681365c84be8bee052b46a311e26737068479e1a8e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text lures related to obtaining free in-game currency (Robux, Minecraft). The primary link, 'https://netcdn.xyz/app/431946152/how-to-get-free-robux-on-mobile-game-hack', is flagged as a redirector for game hacks. The document body also contains obfuscated text and multiple URLs pointing to similar scam content, suggesting a phishing or scamming attempt. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/how-to-get-free-robux-on-mobile-game-hack PDF link annotation
    • http://cosmosdawn.net/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-you-get-free-robux_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_off00003254.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3254 25748 bytes
SHA-256: 0c7425c46e6f51b20d82553d51d73556cf83956c322ffb13dce2bb49958c262c
font_01_sfnt_off00006dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD2 18672 bytes
SHA-256: 54aa4755d3d4fcbd00d11f20b69d4376192dec0a97bdc1376cf216d73564a968

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