Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb1f3bd9a4ef4087…

MALICIOUS

PDF

43.3 KB Created: 2021-05-15 10:03:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c67fd57b65efac76508edf0d3f4f0ea9 SHA-1: 43f3a377a974c027f58ee705da53189d87aa0236 SHA-256: cb1f3bd9a4ef4087372aca9a8b4d021fdbbcc1f1fefdab127a877014a55ba1f9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of 'free Robux' and game hacks to entice users into clicking embedded links. The primary malicious link identified is https://netcdn.xyz/app/431946152/free-robux-without-any-verification-game-hack, which likely leads to a malicious site or download. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a potential for JavaScript execution or redirection to further malicious content, aligning with common phishing and malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-robux-without-any-verification-game-hack PDF link annotation
    • http://wadimor.co.id/media/imagesfiles/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://www.communes.comIn 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_003_off000049fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FE 25136 bytes
SHA-256: 179e5b7fbd34b3d3b505ea992c91b749efae10c4e5ca2ac3355920f32c9d9a2e
font_01_sfnt_off00008487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8487 19144 bytes
SHA-256: f37955fcb4845292a10cf385cf7825d095aa25907e4328d2f78dbaed4e94b6f7

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