Malicious PDF — malware analysis report

Static analysis result for SHA-256 067efced4300dd4e…

MALICIOUS

PDF

44.5 KB Created: 2021-05-14 05:33:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 25a19975a2c3eb25233dcb1177d425b2 SHA-1: cdd65b0fa573e6a5457822ca068f0cc1fc345ddc SHA-256: 067efced4300dd4eba60bea6810fee74f559d300859029ef2cdba282427a9107
200 Risk Score

Malware Insights

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

This PDF document contains multiple links that impersonate Microsoft and promise free Robux or game hacks, indicating a credential phishing or malware distribution attempt. The primary malicious URL identified is https://netcdn.xyz/app/431946152/rbxfree-com-free-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful sites, aligning with common phishing and exploit delivery techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/rbxfree-com-free-robux-game-hack.
  • 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/rbxfree-com-free-robux-game-hack In PDF document text
    • http://loszavera.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://loszavera.com/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://loszavera.com/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/coin-master-hacksco_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
stream_003_off00004aa3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA3 28044 bytes
SHA-256: 3e5e6fa8893c540acf4f3aec92d75a883174b177dad2ed24f8aad4fa986fc32b
font_01_sfnt_off00008beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEB 18276 bytes
SHA-256: 3458f47f0b0e4c5d178391a23bbf01d917f000ba7933fbc297d15d2e5240f022

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