Malicious PDF — malware analysis report

Static analysis result for SHA-256 65a268cc974e88fd…

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 15:03:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 06b3edb0459cd3b26d8724182f96e17f SHA-1: 7576b74c25d4e6595f8aa5a2893154e89807cbe4 SHA-256: 65a268cc974e88fd7add8f0380e6a769f335650276c9d2a9171ef377c1e90500
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising free game hacks and generators for popular games like Roblox. The ML classifier strongly indicated maliciousness, and the presence of these links suggests a phishing or scam attempt designed to lead users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs point to a lure for malicious content.

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/all-black-roblox-free-game-hack In PDF document text
    • http://global-brand.net/userfiles/files/info-roblox-hack_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-codes-in-roblox-arsenal_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/rbx-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/114-hacks_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-easy-fast-no-human-verification_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9D 22212 bytes
SHA-256: 419a6a2f8e1a67499265e7b4fe35ce790447ba70edba93424381084eb2c448d3
font_01_sfnt_off000060cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CC 18820 bytes
SHA-256: 877fc33f367cdf89225246b0b47eebdc6a1575341c5accc411d5165348412bec

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