Malicious PDF — malware analysis report

Static analysis result for SHA-256 9527bf380a61ee29…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 16:58:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 421aa0c09d0936f259a45958e8ebc410 SHA-1: 620946cad036b6e5301295399445afd8ca440077 SHA-256: 9527bf380a61ee29846ff255f5321bd80df09419052fd03f96999156dea6c3c6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure appears to be related to 'Roblox Free Robux Glitch 2021'. The document's structure and embedded URLs strongly suggest a phishing or scam campaign aimed at tricking users into visiting potentially harmful sites. No scripts were extracted, but the PDF's nature points to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-free-robux-glitch-2021-game-hack In PDF document text
    • http://global-brand.net/userfiles/files/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-whatsapp-tik-tok-status-download_GM835599320.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-spin-link_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-cash-madcity-roblox_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-spins-and-coins-coin-master_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3100 21884 bytes
SHA-256: c53d522a0030003708b9f13470167c805e2fd3cbdde6d25b7020876ee98bf582
font_01_sfnt_off0000615c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 19580 bytes
SHA-256: 943daeb10bf22e9bd60a20e050467c69d266f1ba6b6acb54f9dc9d743b39f4b2

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