Malicious PDF — malware analysis report

Static analysis result for SHA-256 48977585c323154a…

MALICIOUS

PDF

33.1 KB Created: 2021-07-10 01:42:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 093af4120c7d2d974089f25e1ba56fe3 SHA-1: 86ce8a681623d00d409b7e640f0a2ad9c3ffc7d2 SHA-256: 48977585c323154a49b6107b3368fce81664ad7d5089f2b0d2047037811ea392
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links and a lure related to 'free Robux' and game hacks, indicating a phishing or scam attempt. The primary URL http://netcdn.tw/app/431946152/free-robux-card-codes-game-hack is a high-priority IOC, likely leading to a malicious redirector or scam page. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure.

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/free-robux-card-codes-game-hack PDF link annotation
    • http://gornjastubica.hr/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/titan-hack-roblox_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/roblox-best-hack-injectors_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-home_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/roblox-robux-money-hack_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/how-to-get-free-robux-pins_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/roblox-adopt-and-raise-a-cute-kid-free-admin_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/mad-city-script-roblox-download-free_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/apk-hack-roblox-pc_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/get-free-robux-2021_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_off00002d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6F 21468 bytes
SHA-256: e84731e19d6a5d01feb07f8a312a4740a8256e1e55e29087fe811b9e04253591
font_01_sfnt_off00005c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6B 18888 bytes
SHA-256: 6c6de0ceaed5fc014d3dcce92ca1cb896bf7995edf6e50a0e815779b2f83a656

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