Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c4eca96bd6d0a42…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 07:55:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f8caf918da3a5c3800263c79301b8650 SHA-1: d3429f9b0d319aade048be0a0c613f75fd10e308 SHA-256: 0c4eca96bd6d0a42498ee1349ad92cfc3b4c78969938af8699acbbbf0b83d691
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game items and hacks for popular games like Roblox and Coin Master. It contains numerous links to external websites, such as http://netcdn.tw/app/431946152/how-to-get-free-roblox-gift-cards-game-hack, which are likely designed to lead users to phishing pages or download malicious payloads. The ML classifier strongly indicated maliciousness, supporting the observed lure and embedded URLs.

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.tw/app/431946152/how-to-get-free-roblox-gift-cards-game-hack PDF link annotation
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/apk-roblox-hack-games_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/infinite-robux_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/roblox-how-to-get-robux-hack-no-scam_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/roblox-game-card-free-codes_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/roblox-how-to-enter-cheat-codes_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-tiktok-likes-75_GM835599320.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_off00002f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F40 22152 bytes
SHA-256: df45725a939d9a1d3f90e5b5c741a074a42f5f053c25c1c817c313312402f35d
font_01_sfnt_off0000606b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606B 19212 bytes
SHA-256: 593eff5b5799541de0a02f4e8f554df8daac443dfed6aeb2634dba9bf3a9d672

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