Malicious PDF — malware analysis report

Static analysis result for SHA-256 c52a50b10d30f447…

MALICIOUS

PDF

44.9 KB Created: 2021-05-11 01:11:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e380280834e82c53efed641cd5ec4714 SHA-1: 1a8fceab47360a020c575dc411d82a64c999b07b SHA-256: c52a50b10d30f447b77b57d950c80bd738ea1f19c0f11ccd0c6f6a4425663dfe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The document body and extracted URLs reinforce this, pointing to sites offering 'Coin Master' game hacks. The primary URL, https://netcdn.xyz/app/406889139/tiradas-coin-master-game-hack, is directly associated with this lure, suggesting the PDF's purpose is to redirect users to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/tiradas-coin-master-game-hack PDF link annotation
    • http://jakthund.org/images/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • http://jakthund.org/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://jakthund.org/images/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://jakthund.org/images/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/how-to-get-free-robux-for-kids_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_off00004616.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4616 27820 bytes
SHA-256: 048a14deb6be6da1db140a429ee9773a09662fedae597ecdca663cca1ad232e5
font_01_sfnt_off00008465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8465 2872 bytes
SHA-256: 4ec72e81aa0e0899a044795e8683e2fd4acb614786e8f4b11bb8481319db316f
font_02_sfnt_off00008e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4C 17720 bytes
SHA-256: 15d95e48d36938550ee5d4d1f29705b15c24be7e4b7e19dd80ff84a2db447fc5

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