Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9c2821eb2748d1…

MALICIOUS

PDF

34.6 KB Created: 2021-07-08 09:12:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d147ae597ac74a47e0279a3065587d4a SHA-1: c80597cb62bf43eb2b53d827d6d0e5e4a3318ece SHA-256: ee9c2821eb2748d11852e29e7fdb713a03001cc69006b3f680d4a4c3eeb9ec45
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising free in-game currency generators and hacks for popular games like Roblox and Coin Master. The document body and embedded URLs strongly suggest a phishing or scam lure designed to trick users into visiting malicious sites. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of further malicious activity.

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/roblox-free-robux-no-verification-game-hack In PDF document text
    • https://smark.com.tw/image/data/files/how-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/can-i-hacked-my-own-roblox-account-got_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/does-roblox-hack-your-computer_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/unlimited-robux-cheat_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-music-hack_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-get-a-free-roblox-gift-car_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-cheats-doawnload_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-but_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-have-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/best-free-roblox-hacks_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_off00003129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3129 22108 bytes
SHA-256: a0b8e2ca5cf58c99afbe8f6d31e33a661bc954dc64340f8e46ee661c51ec1e28
font_01_sfnt_off00006215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6215 19148 bytes
SHA-256: 8dddf83a8dc305c7bfb211f3bc3fbf3b1849d9dcf887b2c8b2fcb602871e3305

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