Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c8d808659e303b5…

MALICIOUS

PDF

34.2 KB Created: 2021-05-21 20:17:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8ecd6f094bdd6faf2e5f9add25d15938 SHA-1: c448c25842428a40d67fac30d6c58df8db76a9d1 SHA-256: 5c8d808659e303b572db4813d5d649f6c8cc16497c49eed8241d5c09cb1cf2d2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering 'free generators' or 'hacks' for popular games and social media platforms. These lures are designed to trick users into clicking through to potentially malicious sites, as indicated by the 'PDF_GAME_HACK_REDIRECT_LURE' heuristic. The document body also contains text and links related to these lures, reinforcing the social engineering aspect.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9505

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/835599320/how-to-get-free-likes-on-tiktok-game-hack PDF link annotation
    • http://roxe2banh.com/public/upload/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-wheel_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_off00002f62.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F62 23948 bytes
SHA-256: e626f5fe50e0c1fae0c942898c871c734a5c3d2210a369984ac5c7833dc470a4
font_01_sfnt_off0000661b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661B 17620 bytes
SHA-256: 1c33fd3c5ea4f422d018a8404ca3ef9e1ac10e3d86ac92994d8eaeb97cd646a5

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