Malicious PDF — malware analysis report

Static analysis result for SHA-256 743b43af8eb55876…

MALICIOUS

PDF

33.6 KB Created: 2021-06-19 22:52:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f18d32a9b1f99e58bd5f4888601dc354 SHA-1: 22c535dcb0c97d192e22fb099642981009da6e7d SHA-256: 743b43af8eb558769051c06b7544b79f5fc848a971422463435372c967ba3c91
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to the URL http://netcdn.co/app/431946152/35-000-robux-for-free-game-hack. This URL is associated with a high-severity heuristic for game hack redirects, indicating a phishing or scam attempt. The ML classifier also flagged the PDF as malicious with high confidence.

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/431946152/35-000-robux-for-free-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-i-get-robux-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-virtual-code-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/wurst-download_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-galaxy-wings-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-create-a-free-account_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-robux-seniac_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/tuto-comment-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hack-tool-download-2021-pc_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_off00002db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB0 21944 bytes
SHA-256: 0d01f04195bf3b3666019fe83433b46d88d0145fdb2daf099f136ca412d0a450
font_01_sfnt_off00005d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D98 19196 bytes
SHA-256: 1a465b290f4bd7d63295a581a829cebfa20b2a96ff1b02cf9d153a527d7040ad

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