Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b8150962588a638…

MALICIOUS

PDF

34.6 KB Created: 2021-06-18 05:38:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2a0c9e132e4417aae52522f479e5f60a SHA-1: e14d15390b7394d93280aca136fc89280a5672a4 SHA-256: 7b8150962588a638d7af4280dfee4894b000599e445a8095ec6fadc5f2b2ccee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free game hacks' for popular games like Roblox. The document body and heuristics indicate a lure to a redirector at http://netcdn.co/app/431946152/roblox-cruise-ship-tyccon-albatros-free-game-hack, which is designed to trick users into downloading further malware. No scripts were extracted, but the overall pattern suggests a phishing or 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-cruise-ship-tyccon-albatros-free-game-hack In PDF document text
    • http://www.dciprotection.ca/images/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/roblox-how-to-get-free-stuff-from-catalog_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/pain-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.dciprotection.ca/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://www.dciprotection.ca/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/youtube-com-hack-for-robux_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/how-do-you-get-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://www.dciprotection.ca/images/how-to-get-free-robux-2021-inspect-element_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/how-to-get-free-robux-on-a-phone-2021_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/roblox-cheat-nocliping_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/how-do-you-get-free-robux-on-roblox_GM431946152.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_off0000303d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303D 22580 bytes
SHA-256: 0e52be68fdfde40301ebe8025242d0391d199483c5536fd3f9812a299cf80cb3
font_01_sfnt_off00006186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6186 19348 bytes
SHA-256: 21be5a9c743bda03248db87e993724e85d63a89ab1cf74894b3c61a506409037

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