Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b307488df96759d…

MALICIOUS

PDF

46.5 KB Created: 2021-05-14 00:20:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8868ddb9e5d3cb2afe4b5e2f7987c589 SHA-1: 50a1b8b76102915eca70b0f2304f8cd49bfe637d SHA-256: 6b307488df96759df6b55d3c12ca173858056d353c61f42e4ecf79279a9360ec
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure for game hacks, specifically mentioning 'Coin Master Hack Spins Apk'. The ML classifier also flagged this PDF as malicious. The primary link, https://netcdn.xyz/app/406889139/coin-master-hack-spins-apk-game-hack, is likely the initial payload delivery or redirection point. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/coin-master-hack-spins-apk-game-hack PDF link annotation
    • http://torkelson.se/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/what-games-on-roblox-give-you-free-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a99.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A99 27392 bytes
SHA-256: d8e9e052b87def42e124684474ed86d7be3ef8afe7d06014ff943062a85ca3ae
font_01_sfnt_off0000892d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892D 3264 bytes
SHA-256: d66c4080ae284a9b4c30992c5983191aaa0a3e32d3a7f70f5d4649bf393320ef
font_02_sfnt_off00009478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9478 17892 bytes
SHA-256: 116ba2d485dba3cc3c3f0b67c538e954af0badc3125826b285df3e1af5dac94f

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