Malicious PDF — malware analysis report

Static analysis result for SHA-256 e946795a0bf49e64…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 07:49:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 54deffd13f83e4d07d0b72f9eb98106d SHA-1: a7a14c4b5c6267d4c9269694cba56033d915519d SHA-256: e946795a0bf49e64ff20096bc634423c1c2583d7e37e0c253897e683dc916dad
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a lure related to free game hacks and Robux to trick users into clicking a link. This link, http://netcdn.tw/app/431946152/real-free-robux-codes-game-hack, redirects to further malicious content. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent. No scripts were extracted, but the PDF structure and embedded URLs are indicative of a phishing or redirection attack.

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/real-free-robux-codes-game-hack PDF link annotation
    • https://ponturipariuri.pro/ckfinder/userfiles/files/how-to-use-cheat-engine-on-roblox-swordburst2_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/earn-robux_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/how-to-get-free-passes-on-roblox_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/hack-para-el-catalogo-de-roblox-2021-espaol_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/best-free-roblox-exploits-2021_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/free-roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/hacker-items-roblox_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/isle-hack-roblox_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • https://ponturipariuri.pro/ckfinder/userfiles/files/free-robux-page-demo_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_off0000325b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325B 22568 bytes
SHA-256: 235cc993253008d39b5d739a0bdd68a5843d67aba391d060b328d6ba0c73073e
font_01_sfnt_off000064d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D0 18964 bytes
SHA-256: 9bf96aa8fc5477a53da022985f8b40c56c69568a39855eae0c096d595955e7d3

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