Malicious PDF — malware analysis report

Static analysis result for SHA-256 514252f065790714…

MALICIOUS

PDF

37.7 KB Created: 2021-05-21 12:29:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ebcf54b6d3d9e10a848173745b8736de SHA-1: e80d91926f740c46bde7a95790a342212f668fee SHA-256: 514252f065790714cf26e1714812493d36b2f59dbb36bbc4ca96107302e8aaa1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game hacks. The primary link, https://netcdn.xyz/app/431946152/how-to-change-username-on-roblox-for-free-game-hack, is associated with a lure for changing Roblox usernames. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to exploit user interest in free game-related content to redirect them to malicious sites, likely for further payload delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/how-to-change-username-on-roblox-for-free-game-hack In PDF document text
    • http://1a-vermietung.com/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://1a-vermietung.com/images/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://1a-vermietung.com/images/hack-game-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_off00003341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3341 26212 bytes
SHA-256: 26b38f6e9235c2a4e2f3a56370bbac21f622de511312ad217df326755781b6cb
font_01_sfnt_off00006f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F59 19240 bytes
SHA-256: 0a326c0d94e4ba5b42cc4a4255d11f6f465e6ea82f55ecdc2c3181a0308aa342

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