Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f1d2d1f13220a9…

MALICIOUS

PDF

29.8 KB Created: 2021-06-28 12:42:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ae4a3555279093ee2f132e1c87f34132 SHA-1: 87af36ecbe6c476823a33b9dd2b87ff42823b5ee SHA-256: 38f1d2d1f13220a9795f06e67fa7f863ed2ce0f34dd6fde39bda3ba65c83557e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links designed to lure the user into clicking on them by promising free in-game currency or hacks for popular games like Roblox and Coin Master. The primary link redirects to malicious infrastructure, indicating a phishing or scam attempt. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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/how-to-get-300-robux-on-roblox-free-game-hack In PDF document text
    • http://winnerwater.com.tw/image/data/files/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/robux-hack-computer-no-app-download-computer-2021_GM431946152.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/hack-rogue-roblox_GM431946152.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/robux-com-free_GM431946152.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/roblox-mafia-outfit-free_GM431946152.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/give-free-robux_GM431946152.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/gamekit-free-800-robux_GM431946152.pdfIn PDF document text
    • http://winnerwater.com.tw/image/data/files/roblox-hack-2021-june_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E15 22136 bytes
SHA-256: 71a161d14d826225fc143ef9e20fc23583dd9ff43ac07f2199ba9f0b89058901

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