Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b6699d6ae762f5a…

MALICIOUS

PDF

35.1 KB Created: 2021-06-19 00:20:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2b7df6a45931595d2ffec0375e6d6d9a SHA-1: 500dea62d36c20e67c1435aacf5b4aa9584dfbdf SHA-256: 3b6699d6ae762f5a0e783c46c107ec2966b0fd6481efba2dee4803252f28dad1
160 Risk Score

Malware Insights

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

The PDF document contains lures for game hacks and free items, directing users to a malicious redirector. The ML classifier strongly indicates maliciousness, and the embedded URLs are associated with known malicious infrastructure. The document's purpose is to trick users into visiting these links, likely to download further malware or engage in scams.

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/new-roblox-jailbreak-hack-exploit-walkspeed-noclip-gravity-and-more-game-hack In PDF document text
    • http://cornerwebstudio.com/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/free-robux-tampermonkey-code_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://cornerwebstudio.com/images/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://cornerwebstudio.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/wall-hack-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/how-to-cheat-in-roblox-parkour_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/free-robux-generator-no-survey-no-human-verification_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/best-free-roblox-t-shirt_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://cornerwebstudio.com/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://cornerwebstudio.com/images/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/how-to-get-free-builders-club-on-roblox-2021_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_off000032b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B7 21272 bytes
SHA-256: 0c001ba33dd0ad06da0e3b0723dc2397ec6041be85f10b988ef411f98a9579fe
font_01_sfnt_off0000610b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610B 20060 bytes
SHA-256: 54b5b62aaf88e9af2627451d580c6043c831979d64f0535913022505dd09233f

Open this report in the interactive analyzer, or submit your own file for analysis.