Malicious PDF — malware analysis report

Static analysis result for SHA-256 207cf13a727495a7…

MALICIOUS

PDF

33.5 KB Created: 2021-06-27 06:25:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 75a343130082d4f1a3e365108fc51131 SHA-1: 49fa595f946bc0c3c7ce21927f89bf2aa8b9cfbc SHA-256: 207cf13a727495a78d56f9447f02b369a04d84f83c8fc8fb4f598dbd57bae6bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that promote free generators and game hacks for popular games like Roblox and Coin Master. These links direct users to a malicious redirector URL, which is designed to lead them to potentially harmful content or further malware. The document's content and the presence of malicious redirector links strongly indicate a phishing or scam attempt.

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/how-to-hack-anyone-account-on-roblox-game-hack In PDF document text
    • https://edu.kyst.com.tw/image/data/files/how-to-get-free-hair-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/get-roebucks-com_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/roblox-studio-create-a-cheat-code_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/shadowrun-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/coin-master-hack-version_GM406889139.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_off00002e20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E20 21564 bytes
SHA-256: 3beff998a9f4dbafc10a65cf390c0aef53d6cf0ed85ad56c997cd6d8b22fcd35
font_01_sfnt_off00005d2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2D 19244 bytes
SHA-256: 8becd7358f29ab7225cfefb72b116321bba7276ba9f5d12bc7bdbd8f9453adde

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