Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3767338cc437701…

MALICIOUS

PDF

40.7 KB Created: 2021-05-10 14:16:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5b58af04cea6686022e83d6699cf2f15 SHA-1: 7683a1f00e842b232f534074fa553e884ab238f6 SHA-256: c3767338cc437701a31b31b64b95e06382a333df3d89c6e58fac9d79605dbec4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a "game hack" lure. This lure redirects to the URL https://netcdn.xyz/app/406889139/levvvel-coin-master-game-hack, which is likely intended to host a malicious payload or lead to further compromise. The document body and embedded URLs reinforce this lure, suggesting a social engineering tactic to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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/406889139/levvvel-coin-master-game-hack PDF link annotation
    • http://ipdrs.org/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/master-free-spin_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003de7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3DE7 24156 bytes
SHA-256: 19085d8f200283a05f038939c505ee2843c627a5e31d918375bdfa3de8595723
font_01_sfnt_off000074ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FF 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB1 17732 bytes
SHA-256: be5d05ecebd3b6a784486ededdc0fa8e742edf4ba5ab2e9ec45d2da96295bf60

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