Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1c339112f6614a9…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 18:01:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 549364c66c3d928ff1c007c84bc05eaf SHA-1: aaf3a5d8d50fca6cfda7b649931614a2ca8d116c SHA-256: d1c339112f6614a92683e849c30eb7971ce726722590eb3aaaa2325e02ebc252
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 0.9980

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 http://netcdn.tw/app/406889139/master-free-spin-and-coin-link-game-hack PDF link annotation
    • http://www.eucorro.com/arquivos/files/admin-commands-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/roblox-tix-lord-hack_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/freer-tiktok_GM835599320.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/robux-com-for-free_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/hack-robux-roblox-2021-funciona_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/free-robux-please_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/roblox-got-talent-piano-hack_GM431946152.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_002_off00002dcc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DCC 22496 bytes
SHA-256: 0a5575982ad65b2ecd2134121735c5d5d6dd7223715c54116dcded0e43a91e6c
font_01_sfnt_off00006010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6010 18520 bytes
SHA-256: cf4ad3d0db45e011148417a5da2d48a735639744ac3d6c02cf0dfb2f3d5802a1

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