Malicious PDF — malware analysis report

Static analysis result for SHA-256 0619917811e96734…

MALICIOUS

PDF

43.4 KB Created: 2021-05-16 01:47:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 342907c9d42f3a1501611a9f89e9efc3 SHA-1: a8893316ef0e410b01b85648d86b77c51b6fb9bf SHA-256: 0619917811e967343f40e6c52f3119271dba34021344ff7663bb48169170e91d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure, specifically pointing to the URL https://netcdn.xyz/app/431946152/earn-robux-now-game-hack. The document body, though partially corrupted, also contains this URL and other similar-sounding links, reinforcing the scam-like nature. The presence of embedded URLs and the ML classifier's high confidence score suggest malicious intent, likely to redirect users to a malicious site or download further payloads.

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/earn-robux-now-game-hack PDF link annotation
    • https://cluster-consulting.com/images/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/easy-robux-com_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-games-coin-master_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-free-spins-link-march-2021_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000490b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490B 27016 bytes
SHA-256: d944849db081e43f6151cf6b127b50a206e47915481625bd4de103259896e255
font_01_sfnt_off0000876a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876A 18244 bytes
SHA-256: c4f4d96dd4ae320374aba47736520dcd557f712ab2f623cefa09a16c6934ef42

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