Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6e0f4b61936e23…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 05:41:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da2a7a7298b0ea991c0686c702cfef03 SHA-1: 29e788300acb4448dd63fdc6e936707f18b39fca SHA-256: 7d6e0f4b61936e239280be81249c70382573fdda54e598432d304d83302a5ab2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, specifically http://netcdn.tw/app/431946152/free-robux-hacker-us-game-hack, which is designed to lure users with promises of free Robux and game hacks. The document body and embedded URLs reinforce this lure, indicating a phishing or scam attempt. No scripts were extracted, but the presence of malicious links and the nature of the lure strongly suggest a 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.tw/app/431946152/free-robux-hacker-us-game-hack In PDF document text
    • https://dolphintour.vn/images/uploadsfiles/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/smurf-backpack-gives-free-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/get-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/speed-hack-roblox-download-2021_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-system_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/robux-gratis-sin-hacks-2021_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-free-templates-blank_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/cheats-that-make-you-get-staff-on-roblox-on-computer_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off00002f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F38 21960 bytes
SHA-256: d71547c6340f7f8268fe563d5c8a46376cffe3c0f8a5d846c2f678e55f94ee82
font_01_sfnt_off00005f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3C 18884 bytes
SHA-256: bfc674629a4fdfc233a3c1a19cbee54387e60bd0cdfc4a3107778b42d9fa82d8

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