Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bde8568ea710182…

MALICIOUS

PDF

39.1 KB Created: 2021-05-23 16:15:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2fa16dcef1606b36558b464c3a20a23b SHA-1: 6b4638a98516fa3a3bfa0a0b8fcecc996cb02e4a SHA-256: 5bde8568ea710182b2b9fa3f6ea0032cacf065ccd74d00f9e1e830a3fe551dc8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to websites offering 'game hacks' and 'free spins', a common lure for phishing or malware distribution. The document body explicitly mentions 'Coin Master Links Free Spins' and includes a 'CLICK HERE TO ACCESS COIN MASTER GENERATOR' call to action, reinforcing the deceptive nature of the content. While no scripts were directly extracted, the heuristic firings indicate the PDF is designed to redirect users to potentially malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-links-free-spins-game-hack In PDF document text
    • https://eurekaaccounting.co.za/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/my-robux_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/robux-win_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_002_off00003313.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3313 24320 bytes
SHA-256: ca938e90446ddf09d179b24b19d6f80c40896d98d97836e57820ad426ca92fa9
font_01_sfnt_off00006a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A69 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off000077f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F0 18056 bytes
SHA-256: 95118de0f1fa2d9d8d6d34d7ce9f6e9c56d43c25fce4d2a4bd556d275959b9e0

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