Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fea3ecf82c44656…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 08:05:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8c6d9ce9aa63cadbd8880cf1323db15e SHA-1: bf444a815fd1244a4f6243432f16de4f24514492 SHA-256: 4fea3ecf82c446562f70c885f8158a49dd6d92182f504f67c615c22470a020c3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Roblox Cheats' and a direct link to a URL that is flagged as malicious. This suggests the document is designed to trick users into visiting a site that likely hosts malware or phishing content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-cheats-for-booga-booga-game-hack PDF link annotation
    • https://edu.kyst.com.tw/image/data/files/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/hacking-on-mano-county-roblox_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/on-roblox-how-do-you-hack_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/pubg-uc-20210_GM1330123889.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/hacks-de-chat-roblox_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/get-a-free-ps-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/cheat-files-robux-generator_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/how-to-hack-anyone-account-on-roblox_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_off00002ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF7 22568 bytes
SHA-256: 9c43629059a29d13b077c7b6b754321d951d203d7cd0ca153e2def642a048c67
font_01_sfnt_off00006258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6258 18920 bytes
SHA-256: 84c356273f17ec8efea01b11c88d22962be5f2eca390fc4a01b416fef29e44e7

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