Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d059da93f08f5c2…

MALICIOUS

PDF

36.1 KB Created: 2021-05-24 08:53:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a769441f39cda6e9735839fcc4c045f3 SHA-1: 21bd7d6d9ef940c0f40f2225241bed16f2c0679f SHA-256: 6d059da93f08f5c2ab3ead7fc808f432d52a1f068fd1c2ce13a16120bc66203b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/how-to-host-a-minecraft-server-for-free-game-hack PDF link annotation
    • http://cosmosdawn.net/images/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/mobihack-net-roblox-hack_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_off000034fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34FE 24920 bytes
SHA-256: 083f6100b2f4f4dc45475ba52760bac494fe15ab6bd0911be4aba6dda40c1985
font_01_sfnt_off00006c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C89 17988 bytes
SHA-256: 552c8aaf5f0bf5f0c44469b5bd19d93c548c2f36967da1a6f1157fed71bc8ec1

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