Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f5dad8997328c9…

MALICIOUS

PDF

38.3 KB Created: 2021-05-20 20:11:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 19d735aefb62711cfc203f9bf75b94d2 SHA-1: 28803535ec670898096bc136d595851b4757ff98 SHA-256: 63f5dad8997328c9f6798103c5033be921df25dd07f40c918a99b37015ea1fbc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites offering game hacks and free items, indicating a phishing or scam attempt. The document body explicitly mentions 'Roblox Free Item Codes' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/431946152/roblox-free-item-codes-game-hack In PDF document text
    • https://schulzpressetext.de/images/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/earn-robux-websites_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/best-free-spin-app-for-coin-master_GM406889139.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
font_00_sfnt_off00003448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3448 28728 bytes
SHA-256: 2be751c33c9dec50693abb9340a48b1d6dc022edb3d20b8134fd6137e0a0fec8
font_01_sfnt_off000073d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D1 18488 bytes
SHA-256: c72c233e0477db5c15587e2c1e6f96ab3255d21c2f787dab6c27132f5893b73f

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