Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e7ccede67b0429…

MALICIOUS

PDF

35.4 KB Created: 2021-06-29 07:49:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 07b5cfed11133751b2943b9579a3176b SHA-1: b161744fff6178b3499a3c77b8a62544a3408a0e SHA-256: 18e7ccede67b04290585fff7ecc7948b157dd11987a66f80d63c6ee476f3132a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a URL associated with malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Free Robux' and the malicious URL, reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful 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/free-robux-2021-new-no-survey-game-hack In PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/will-tiktok-free-view-bot_GM835599320.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/roblox-escape-room-theater-cheats_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/get-free-clothing-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/como-hackear-cuentasen-roblox_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/every-free-item-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-roblox-girl-clothes_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_off00003148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3148 22488 bytes
SHA-256: 013bb2df9e5adf6bff6fccc332222f0c432bc08ffae42b9e9b099c4ce286ba0b
font_01_sfnt_off0000637f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637F 19576 bytes
SHA-256: c9153f93b5dcb102c8962c470a16432f137df50a574ccff90db42a8a0305a9d6

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